Code-Utils is a problem classifier for Codechef. You can search problems by their name, code, author and tags below. Additionaly, logged in users can rate, mark as favourite and add tags to problems they have solved. You can also mark unsolved problems as To-Do.
Code Name Author AC % Tags Rating Fav-Count Update
LIFE One Dimensional Game of Life pieguy 206 48.84 cook04 easy pieguy None 0
ANUMLA Mahesh and his lost array anudeep2011 1186 23.99 anudeep2011 cook51 easy greedy heap multiset None 0
CHBLLNS Chef and Ballons None 490 38.13 antoniuk1 april16 simple None 0
DPOWPERM D-Power Permutations anton_lunyov 14 28.85 anton_lunyov cook11 hard None 0
BAKE The Baking Business nomind 46 26.13 medium nomind oct11 None 0
G5 Chemical reactions admin 8 30.56 admin None 0
G4 Alien language admin 10 20.0 admin None 0
G3 A Coin Game admin 40 20.17 admin None 0
G2 Smart Frog admin 20 6.52 admin None 0
G1 A Bowling Game admin 21 29.63 admin None 0
CHEFTEAM Chef team anton_lunyov 604 14.9 anton_lunyov cook06 easy None 0
SEINC Sereja and Subsegment Increasings sereja 69 28.46 sereja None 0
TRISQ Fit Squares in Triangle devuy11 10967 63.39 cakewalk cook55 devuy11 geometry recursion None 0
DEVUGRAP Devu and Grapes amitpandeykgp 3664 46.52 amitpandeykgp cakewalk gcd ltime24 None 0
PNTNG Painting kostya_by 756 32.01 cook47 easy greedy kostya_by sorting None 0
GX Mosaic admin 11 66.67 admin None 0
CPOINT Central Point anhdq 98 14.94 anhdq april11 easy None 0
GAMEAAM Subtraction Game satej 219 28.73 cook42 easy game-theory satej sprague-grundy None 0
MINDEG Minimum of Degrees None 10 91.67 errichto None 0
CYDB Can you do it better thocevar 8 10.81 feb12 hard thocevar None 0
NUMSUM Sum of numbers admin 223 9.64 admin None 0
CHEF_GAM Chefs Game gamabunta 11 8.76 cook12 gamabunta hard None 0
GAPFILL Gap Filler Game yellow_agony 17 29.31 jan12 medium yellow_agony None 0
MONEY Money Matters admin 163 14.11 admin None 0
PERMPAL Permutation and Palindrome admin2 386 34.57 admin2 constructive feb18 palindrome simple string None 0
TAKEAWAY Zeta-Nim Game flying_ant 89 40.41 cook18 flying_ant medium takeway None 0
FUNCTION Backup Functions friggstad 27 41.11 cook02 friggstad hard None 0
QRECT Rectangle Query xiaodao 80 35.26 fenwick hard sept14 sqrt-decomp xiaodao None 0
PARADE Annual Parade cgy4ever 92 32.65 binarysearch cgy4ever floyd-warshall min-cost-flow sep12 None 0
CHEFSTLT Chef and Two Strings furko 7732 62.77 furko ltime25 string None 0
NUMFACT Number of Factors vamsi_kavala 2327 18.85 factorization ltime01 simple-math vamsi_kavala None 0
BEX Book Exercises vinayak garg 411 14.24 dec12 easy stack vinayak garg None 0
GARDENSQ Garden Squares gamabunta 718 49.34 cook12 easy gamabunta None 0
DIVQUERY Chef and The Divisibility Queries rustinpiece 291 28.78 cook37 medium offline-process rustinpiece None 0
COMPILER Compilers and parsers kuruma 3243 26.61 ad-hoc easy kuruma may14 None 0
CHINSM Chef and insomnia None 133 17.15 ad-hoc aug15 combinatorics divisors intervals medium zedthirtyeight None 0
TACHSTCK Chopsticks tuananh93 5117 43.22 cakewalk cook36 greedy sorting tuananh93 None 0
LCH15JEF Just multiply pavel1996 186 22.0 bignum ltime20 maths pavel1996 None 0
CHPUZZLE Jigsaw Puzzle Solving xcwgf666 23 49.39 xcwgf666 None 0
YVSTR Yalalovichik Strings None 79 20.41 cook101 deadwing97 None 0
REPSTR Repeated String anhdq 60 30.38 anhdq medium oct11 None 0
MSTONES Milestones thocevar 55 19.38 feb11 hard thocevar None 0
PROPOSAL Primary Proposal admin 58 53.29 admin None 0
CHSTR Chef and String antoniuk1 176 8.97 antoniuk1 combinatorics june15 medium suffix-array zfunction None 0
LUCKYCOM Little Elephant and CNSes witua 18 21.65 cook22 medium witua None 0
BLOCKS Block Tower pieguy 14 44.19 challenge july10 pieguy None 0
SEQUENCE Integer Sequences friggstad 17 27.69 cook07 friggstad medium None 0
JUNONGF Juno Puzzle for May mischievous_me 49 19.43 exponentiation may13 medium mischievous_me number-theory simple-math None 0
PIANO1 Chef and Piano Scales witalij_hq 252 54.22 april15 witalij_hq None 0
EQUALIZ Equalization gennady.korotkevich 166 42.98 cook27 gennady.korotkevich simple-math None 0
DDILEMMA Domain Dilemma admin 49 9.86 admin None 0
THSTRS Three Strings admin2 65 20.22 admin2 None 0
BFORG The Secret Fellowship of Byteland admin 19 23.92 admin None 0
INTCOMB Integer Combinations Of Vectors friggstad 12 68.42 challenge friggstad oct10 None 0
STABLEMP Stable Marriage Problem admin 516 40.24 admin None 0
LOKBIL Most Popular Friend ashwin_jain 138 27.81 ashwin_jain easy july11 None 0
REDBLUE Red and blue points None 36 16.2 dec17 kingofnumbers None 0
ASHIGIFT Saving a gift of love pnkjjindal 263 22.94 binary-search ltime22 pnkjjindal None 0
LEBINARY Asmany Number Verification gamabunta 33 30.15 bignum cook25 gamabunta maths None 0
BMASTER Blade Master Rubanenko 15 17.53 Rubanenko medium oct12 None 0
CHCUBE Chef and Cube antoniuk1 623 36.83 antoniuk1 cakewalk implementation july15 None 0
ODDDIV Odd Divisors None 1095 38.83 cook69 divisors kostya_by simple sum None 0
KITCHEN Large Kitchen gennady.korotkevich 19 54.72 challenge gennady.korotkevich july11 None 0
TREEROOT Root of the Problem pieguy 3557 68.89 cook29 pieguy simple-easy simple-math None 0
PRMRANGE A Game of Primes None 19 7.26 vishal_nnd0 None 0
TOLLS Pricing Tollbooths friggstad 25 96.5 challenge friggstad june10 None 0
CLOSEFAR So Close Yet So Far None 40 10.05 animesh_f data-structure ltime38 lunchtime mo-algorithm optimization None 0
CONFLIP Coin Flip khadarbasha 12657 44.2 ad-hoc cakewalk khadarbasha nov12 simple-math None 0
CHEFGR Chef and Ground berezin 2096 35.18 berezin None 0
CHEFGP Chef and a great voluntary Program berezin 184 20.8 berezin easy greedy oct17 None 0
SPOONS Project Spoon viv001 181 31.27 combinatorics easy-medium sept13 viv001 None 0
ANUAHR Abhijeet and rectangles anudeep2011 78 20.86 anudeep2011 cook54 data-structure medium None 0
ADDFRAC Adding Fractions syco 143 14.48 april10 easy syco None 0
CHEFGM Chef Game div_adm 107 29.64 div_adm easy-medium game nov13 None 0
TREDEG Trees and Degrees None 15 26.42 vivek_1998299 None 0
BEARS Bears and Bees gennady.korotkevich 21 42.86 cook19 gennady.korotkevich hard None 0
LUCKYDAY Lucky Days laycurse 28 12.3 hard laycurse nov11 None 0
BUTTONS Buttons admin 179 10.69 admin None 0
MTRNSFRM Matrix Transformation None 108 29.44 ad-hoc alex_2oo8 cook78 easy math median None 0
RESTPERM Restore the Permutation None 31 13.22 divide-and-conq ltime41 recursion xcwgf666 None 0
TWOVRIBL Two Variables None 624 34.25 binary-search bruteforce cook108 imanik precomputation taran_1407 None 0
DRAGONST Dragonstone kostya_by 28 15.49 graph kostya_by lca ltime15 mst tree None 0
LIKECS05 Mixing Colors None 34 22.03 cook86 fft inclusn-exclusn likecs likecs medium-hard None 0
CSUBQ Chef and Subarray Queries None 179 20.84 code_hard123 medium nov17 segment-tree None 0
BTMNTREE Batman and Tree None 17 31.11 barenuz cook95 dynamic-programming hard lazypropagation segment-tree None 0
ANKPAREN Longest non regular parentheses sub-sequence None 288 24.82 basic-prog code_master01 cook59 easy-medium pattern stack None 0
ONP Transform the Expression admin 11372 48.15 admin None 0
BINTREE Shortest Path in Binary Trees darkshadows 2639 56.23 april14 darkshadows easy tree None 0
TRMAG BIT Magazine calc_saransh 150 33.61 calc_saransh easy sep11 None 0
CHALENGE Password Cracking Challenge pieguy 73 68.02 ad-hoc bruteforce challenge may13 pieguy None 0
TWODOGS Make Him Happy adurysk 445 21.78 adurysk easy feb14 None 0
TERM Counting Terms tanaeem 18 28.4 feb11 medium tanaeem None 0
RECTQUER Rectangular Queries Rubanenko 331 36.86 Rubanenko dec13 easy prefix-sum None 0
CHEFGAME ChefGame Rubanenko 227 21.8 Rubanenko april13 medium mst prim None 0
SEATRSF Sereja and Transformation sereja 129 26.96 combinatorics easy inclusn-exclusn oct13 sereja None 0
CSS2 Cascading Style Sheets piyushkumar 567 35.44 easy hash-map ltime17 piyushkumar None 0
SEAPERM2 Sereja and Permutations sereja 42 25.54 sereja None 0
WRKWAYS Ways to Work None 68 17.45 combinatorics factorization june18 likecs medium observsations sanroylozan sanroylozan None 0
TAQTREE Queries On Tree tuananh93 247 22.55 None 0
WSC A wolf, a sheep and cabbage xcwgf666 205 27.99 cakewalk construction language ltime18 programming xcwgf666 None 0
TSPAGAIN Travelling Salesman Again ! syco 36 47.95 april10 hard syco None 0
HEADBOB Tanu and Head-bob piyushkumar 9545 52.78 ad-hoc cakewalk ltime17 piyushkumar None 0
TPRODUCT Tree Product anhdq 356 16.64 anhdq easy may11 None 0
CALC Calculator None 349 26.16 easy july17 kingofnumbers math simple-math None 0
PETERSEN Petersen Graph kostya_by 386 33.95 bfs cook52 graphs kostya_by simple traversal None 0
TASTR Level Of Difference tuananh93 223 15.01 cook32 easy-medium lcp string suffix-array tuananh93 None 0
MAXCROSS Maximal crosses anhdq 135 21.63 anhdq easy july10 None 0
MXSM Chef and Maximum Sum Matrices None 24 13.74 ad-hoc cook66 easy-medium greedy ma5termind None 0
FTRIP Field Trip vamsi_kavala 215 25.54 may13 probability simple simple-math vamsi_kavala None 0
AGENTS Special Agents kostya_by 18 36.36 cook57 hard kostya_by math None 0
CLETAB Cleaning Tables vinayak garg 538 19.61 aug14 greedy simple vinayak garg None 0
TMP01 To Queue or not to Queue gerald 47 38.91 gerald hard sept13 strings suffix-trees None 0
CODIE Codie Bird None 18 58.14 acm17chn chn17rol expected-value matrix-expo med-hard sidhant007 None 0
SURCHESS Chef and Surprise Chessboard None 76 34.78 easy-medium izaron oct18 prefix-sum None 0
QNUMBER Queries About Numbers kamranmaharov 120 16.51 factors kamranmaharov number-theory sep12 None 0
CLSUMG Sum of Primes None 27 28.46 avijit_agarwal cole2018 fft medium sieve None 0
SAD Gift Rift shettynamit 1168 38.97 cakewalk july12 search shettynamit None 0
STDPRGS Estimating progress None 68 17.74 ltime29 medium-hard mo-algorithm pavel1996 None 0
DEVLOCK Devu and Locks admin2 51 25.08 admin2 feb15 None 0
KNGHTMOV Knight Moving anhdq 45 14.75 anhdq dynamic-prog gauss-elim number-theory sep12 None 0
REVERSED The Reversed World admin 11 15.12 admin april10 hard None 0
CHDOGS Chef and Three Dogs None 437 47.16 antoniuk1 oct16 simple symmetry trigonometry None 0
ROTSTRNG Rotate the String flying_ant 132 12.63 cook13 flying_ant medium rotstrang None 0
HIGH Highways admin 24 19.7 admin None 0
MRO Method Resolution Order None 106 57.29 acm17chn chn17rol dynamic-programming easy wittyceaser None 0
BALANCED Balanced Walks friggstad 20 38.71 friggstad medium nov10 None 0
LUCKFILL Little Elephant and Filling witua 20 11.89 cook22 medium witua None 0
ONEKING One Dimensional Kingdoms nssprogrammer 1539 27.04 None 0
SKIRES Ski Resort thocevar 34 25.21 hard march11 thocevar None 0
ATOMS Breaking Into Atoms friggstad 148 42.86 cook07 easy friggstad None 0
TOURMAP Sridhar Likes Travelling kaushik_iska 354 26.82 graph hash-map kaushik_iska nov12 simple None 0
BBRICKS Beautiful Bricks None 68 24.38 combinatorics dynamic-programming neutron_byte oct18 None 0
CHAPD Chef and Prime Divisors witalij_hq 366 26.93 easy may15 witalij_hq None 0
FFUNCT Fun and Functions None 14 30.43 snck15el xcwgf666 None 0
TANGDIV Divide the Tangerine malinovsky239 160 29.89 ad-hoc april14 easy-medium malinovsky239 None 0
COINS Bytelandian gold coins admin 13012 15.08 admin None 0
GST Generalized Spanning Trees friggstad 10 35.0 friggstad hard may10 None 0
MINXOR XOR Minimization kostya_by 73 13.66 cook44 decomposition kostya_by medium sqrt trie None 0
CHPLNTS Chef And Plants None 29 12.14 abbas None 0
CHEFANUP Chef Anup piyushkumar 272 39.73 ltime22 maths piyushkumar None 0
QCHEF Chef and Problems gomelfk 163 15.34 gomelfk None 0
HACKFU Hack Fulu None 54 15.71 allllekssssa constructive cook-off cook97 greedy median taran_1407 None 0
ANKNIM2 Bored of Nim None 35 22.79 code_master01 cook59 fft game-theory medium-hard None 0
WSTRING W String jay_adm 181 18.25 dynamic-prog easy jay_adm june13 None 0
OPTSPL Optimal Splitting None 0 0.0 kalpitk None 0
CHEFLCM Chef and Interview abhra73 967 34.59 abhra73 april15 None 0
REACAR Rearranging Cartons yogesh01 58 55.24 yogesh01 None 0
COLLTIME Time of collisions anton_lunyov 16 13.04 anton_lunyov cook06 medium None 0
LCKYST Na2a and lucky stone na2a 449 30.11 july15 maths na2a simple None 0
NONPALIN First non-Palindrome anton_lunyov 17 13.1 anton_lunyov cook15 medium None 0
MEDIC When to take medicine None 960 24.22 vishal_nnd0 None 0
SEEDS Seeding The Pattern friggstad 17 26.09 cook05 friggstad medium None 0
SATY0000 Conquer Beyond the Wall None 0 0.0 aashu_k None 0
TELEPORT Teleports None 16 12.84 gainullinildar ltime48 medium-hard segment-tree sqrt-decomp None 0
DAGCH Graph Challenge shiplu 45 43.1 shiplu None 0
CBAL Chef and Balanced Strings ma5termind 87 20.65 ma5termind may15 medium-hard None 0
GLASS Glass Measurement anshuman_singh 17 24.24 anshuman_singh feb11 medium None 0
YASEQ Yet Another Sequence pieguy 17 33.33 cook14 hard pieguy None 0
XYPRESQ The Prestige None 7 12.7 include_sajal None 0
MCHAIRS Missing some chairs kuruma 1077 36.91 combinatorics kuruma nov13 simple None 0
PROB The Probability Of Winning ballon_ziq 1061 62.27 ballon_ziq july13 probability simple simple-math None 0
RRTREE Tree Rubanenko 136 43.06 Rubanenko bit cook38 hard heavy-light segtree trees None 0
OPTSSET Optimal Subset None 12 16.09 chemthan chemthan ltime53 maths medium-hard optimization None 0
AMR15B Devasena None 261 16.14 acmamr15 medium number-theory suh_ash2008 None 0
RAWPOWER K - Raw Power None 16 20.22 architk None 0
TRAVELER Chef Travel Routes anton_lunyov 149 37.89 anton_lunyov cook15 easy None 0
CHGLSTGT Girl Friend and String Gift vineetpaliwal 175 19.92 dynamic ltime05 palindromes programming strings vineetpaliwal None 0
PRLADDU DevuLand, Dinosaurs and Laddus dpraveen 548 36.68 dpraveen None 0
LAND The Great Plain gennady.korotkevich 26 56.73 challenge gennady.korotkevich oct11 None 0
CSUBSQ Count Subsequences None 23 27.59 cook101 deadwing97 divide-and-conq dynamic-programming None 0
HAREJUMP Chefs new Pet calc_saransh 151 30.48 calc_saransh easy nov11 None 0
TKCHOCS Collect the Chocolate Chips flying_ant 90 29.23 cook13 flying_ant medium None 0
HDELIVER Home Delivery yellow_agony 543 27.73 easy march12 yellow_agony None 0
TSUBSTR Substrings on a Tree xcwgf666 84 26.21 april12 hard xcwgf666 None 0
TREEWLK2 Tree Walk None 10 12.61 binary-lifting cases kingofnumbers lca ltime65 medium-hard path taran_1407 None 0
TRIP Trip syco 156 10.77 april10 easy syco None 0
SPMATRIX Count Special Matrices anton_lunyov 33 37.08 anton_lunyov combinatorics hard june13 None 0
FENWITER Fenwick Iterations None 125 37.03 bit cenadar easy oct16 None 0
CONSESNK Consecutive Snakes admin3 256 26.01 admin3 easy snackdown snckpa17 ternary None 0
ARRANGE Arranging the Appetizers friggstad 1340 53.08 cook02 easy friggstad None 0
CLMBSTRS Climbing Stairs kuruma 568 34.46 combinatorics feb13 kuruma simple None 0
URCALC Program Your Own CALCULATOR None 2484 22.25 tanmay28 None 0
CHEFOFR Offer for Chef None 31 21.31 april19 binary-search bitmasking bitwise medium utkarsh97 None 0
PRIMPATT Prime Pattern spooky 99 14.37 easy june10 spooky None 0
LPAIR Chef and Reunion shiplu 582 35.48 bit cook43 easy-medium shiplu None 0
MOU2H Mountain Holidays 2 witalij_hq 95 21.2 aug14 dynamic-prog medium witalij_hq None 0
CHEFRP Chef and new recipe abhra73 997 36.52 abhra73 cakewalk may15 None 0
DEVBDAY Devu, his friends and birthday gifts admin2 115 13.94 admin2 basic-graph cook58 easy None 0
ADDCHAIN Addition chains anton_lunyov 16 21.36 anton_lunyov challenge july12 None 0
GHVSSI Ghayeeth vs Siroj None 45 18.77 cook98 deadwing97 easy-medium game-theory number-theory taran_1407 None 0
EGBOBRD Bread egor_bobyk 427 23.93 egor_bobyk implementation july15 maths simple None 0
NEWREST New Restaurant fushar 27 27.89 fushar medium nov11 None 0
TFB2DW The Frictionless Bisected 2-Dimensional World None 5 24.24 cook104 erfaniaa geometry hard physics None 0
SECUBE Sebi and the cube None 107 12.13 cook76 easy-medium iscsi modular-arith precomputation None 0
CUBESUM Sums in a cuboid admin 230 40.11 admin None 0
SEABAL Sereja and Ballons sereja 71 36.08 aug13 bit fenwick medium segment-tree sereja None 0
COUNTWAY Sherlock Counts Ways None 91 23.58 combinatorics cook75 darkshadows divide-and-conq fft medium-hard None 0
MINSUBAR Minimum SubArray None 266 15.27 binary-search chemthan chemthan cook89 easy-medium likecs prefix-sum None 0
DELIVERY Delivering Bread friggstad 12 71.69 challenge dec10 friggstad None 0
MBOARD Magic Board shangjingbo 135 25.85 data-structure feb13 medium shangjingbo None 0
VCS Version Control System kostya_by 4790 59.57 cakewalk cook57 kostya_by None 0
LEBAMBOO Little Elephant and Bamboo witua 198 24.08 ad-hoc oct13 simple-easy witua None 0
RANKA Ranka cgy4ever 65 35.45 cgy4ever graph jan15 medium-hard None 0
CNTFAIL Magic School None 162 19.65 bipin2 None 0
RIVPILE Across the River laycurse 82 20.99 medium laycurse shortest-path dijkstra july13 dp 5.0 1
RSIGNS Road Signs None 354 24.9 daniel_1999 june19 junechallenge None 0
KBIGNUMB Eugene and big number None 139 8.49 aangairbender None 0
FALLDOWN Remys last tour flying_ant 20 29.07 cook18 flying_ant medium None 0
DELNMS Deleting numbers sereja 35 66.44 ad-hoc aug13 challenge order-statistic sereja None 0
BALSUB Balanced Parenthesis Substrings None 14 19.23 balajiganapath None 0
EGRCAKE Chef and cakes None 308 23.49 egor_bobyk gcd nov15 simple None 0
SEAEQ Sereja and Equality sereja 102 35.24 dp hard july14 maths sereja None 0
DGTCNT Chef and Digits None 66 23.22 acyume april17 None 0
ZENCALC Peaceful Calculator kaushik_iska 17 29.85 ad-hoc kaushik_iska march13 medium modulo None 0
TACHEMIS Compressed String tuananh93 53 12.33 cook36 medium palindrome strings tuananh93 None 0
IDOLS Idols and Fans kostya_by 33 16.88 cook47 hard heavy-light kostya_by segment-tree None 0
HOMDEL Delivery Boy vamsi_kavala 852 43.97 aug12 shortest-path vamsi_kavala None 0
PERMPART Partition into Permutations None 60 25.7 dynamic-programming greedy kingofnumbers ltime70 observations taran_1407 None 0
AMDRUNK Drunk Man in Large City None 17 26.51 balajiganapath None 0
BNGAME Brand New Game xcwgf666 27 11.52 easy ltime12 stl two-pointers xcwgf666 None 0
FINDA Finding the matrix None 21 26.6 bipartite constructive cook90 maths medium-hard sidhant007 None 0
SEADIVM Sereja and Matrix Division sereja 8 44.19 sereja None 0
TASTYD Tasty Dishes Rubanenko 48 7.2 Rubanenko divide-and-conq ltime01 None 0
PARALLEL Parallel Computing thocevar 31 39.81 april12 medium thocevar None 0
WRDSUM Weird Sum None 11 25.0 alex_2oo8 biginteger bignum dynamic-programming feb16 hard interpolation None 0
CHEFLUCK Lucky lucky number rosyish 2346 42.7 easy may12 rosyish None 0
CROCDILE Crocodile admin 64 48.56 admin None 0
RIGHTRI Chef and The Right Triangles rustinpiece 5937 53.79 cook37 easy geometry rustinpiece None 0
CIELMAP Ciel and Map laycurse 135 23.74 cook24 easy geometry laycurse None 0
AMSGAME2 Subtraction Game 2 satej 469 32.21 cook34 dynamic-prog satej simple None 0
MINWDSUM Minimal Weighted Digit Sum anton_lunyov 12 22.34 anton_lunyov bfs cook31 medium None 0
ANDTUPLE And Tuples piyushkumar 69 25.63 bit dp ltime17 memoization piyushkumar recursion None 0
ADDMULT To add or to multiply game None 51 20.13 ad-hoc cook79 game-theory kingofnumbers medium None 0
TILT Table Tilt pieguy 11 40.74 challenge pieguy sep11 None 0
XDS XD Subsequences None 147 33.54 kr_abhinav None 0
PAINTING Crease Painting flying_ant 23 28.43 cook21 flying_ant medium None 0
SEASORT2 Sereja and Sorting 2 sereja 36 65.56 challenge greedy heuristic march14 sereja test-gen-plans None 0
CULPRO Cultural Programme yogesh01 114 42.81 easy inpr1501 yogesh01 None 0
CBALLS Churu and Balls None 253 22.53 amitpandeykgp easy jan16 primenumbers sieve None 0
PAINTBOX Painting the Boxes piyushkumar 64 22.54 ltime22 piyushkumar segment-tree sets None 0
EXPGAME Exponential Game vineetpaliwal 207 27.91 game-theory impartial-game ltime05 sprague-grundy vineetpaliwal zero-sum-game None 0
PCJ18G Chef and Pizza None 70 11.86 madhav_1999 madhav_1999 pcj prakhar17252 proconjunior tanmay28 None 0
CAKES Cake Production Line friggstad 12 75.0 challenge friggstad sept10 None 0
PCJ18C Chef and Polygon Cakes None 1339 22.81 madhav_1999 madhav_1999 pcj prakhar17252 proconjunior tanmay28 None 0
FRNDMTNG Chef and His Friend antoniuk1 180 21.78 antoniuk1 easy frndmting june15 maths probability None 0
MULTHREE Multiple of 3 None 671 24.58 cook90 easy maths modulo sidhant007 None 0
ENETIRE Our Enemy does not Tire None 5 29.41 shivamg_isc None 0
DRANGE Range of Data vamsi_kavala 475 16.16 adhoc aug12 difference-seq vamsi_kavala None 0
TREE3 Triple-tree decomposition None 68 17.16 altruist_ bfs constructive dfs ltime59 medium None 0
CHEFCOUN Counter Test For CHEFSUM admin2 237 21.53 admin2 oct17 simple None 0
FOURSQ Fantastic Four None 43 12.3 data-structure four-square jan17 lagrange segment-tree sidhant007 None 0
SNOWMAN Do You Want to Build a Snowman admin3 28 31.37 admin3 None 0
SSTORY A Story with Strings kuruma 289 15.54 binarysearch hashing kuruma march14 medium suffix-array suffix-auto None 0
LCH15JGH Many bananas pavel1996 44 15.75 ad-hoc fenwick ltime20 maths pavel1996 segment-tree None 0
REMISS Chef and Remissness shiplu 17745 55.32 cakewalk cook43 shiplu None 0
DWNLD Download file None 3326 53.41 cakewalk cook79 kingofnumbers None 0
C3 Prime words admin 22 12.38 admin None 0
C2 The powerful sum admin 30 5.33 admin None 0
C1 Swapping mismatches admin 34 5.86 admin None 0
STRQUERY String Query wjmzbmr 23 15.29 april13 hard suffix-array treap wjmzbmr None 0
C5 An interesting subsequence admin 41 11.04 admin None 0
C4 Healthy dinner party admin 100 18.29 admin None 0
HS08TEST ATM admin 89117 19.92 admin None 0
ELPHANT Elephant admin 82 56.13 admin None 0
CX Best board fill admin 11 41.94 admin None 0
CARVANS Carvans yellow_agony 9789 42.64 cakewalk cook26 simple-math yellow_agony None 0
UNICOURS Courses in an university admin2 558 49.78 admin2 long-contest may17 None 0
TRICOIN Coins And Triangle None 6267 51.06 binary-search cakewalk implementation ltime35 ma5termind mathematics sqrt None 0
TREES Trees Again syco 50 38.89 medium sept10 syco None 0
VOTING Closest Ranking friggstad 20 44.9 friggstad july10 medium None 0
EVENT Event None 1348 18.96 cakewalk implementation kingofnumbers ltime66 None 0
SEAINVS Sereja and Inversions None 15 24.62 sereja None 0
GCDS GCD Subsequences None 8 6.61 allllekssssa branch-and-bound hard ltime70 number-theory partial-sums taran_1407 None 0
BICKER Bickering Cooks friggstad 10 68.97 friggstad may11 medium None 0
GCDQ Gcd Queries None 449 28.99 None 0
INVENTRY Arranging the Inventory None 142 21.81 easy greedy kingofnumbers observations snckpe19 taran_1407 None 0
LAPIN Lapindromes vamsi_kavala 2864 54.3 ad-hoc cakewalk june13 vamsi_kavala None 0
RRFRNDS Friends Rubanenko 867 19.33 Rubanenko cook48 graph medium None 0
CPERM Count Permutations None 279 36.17 combinatorics darkshadows easy fast-expo nov16 None 0
PEAKS Peaks None 17 10.1 dynamic-programming fenwick kostya_by ltime32 segment-tree None 0
GUZAC GukiZ and Candies None 342 20.05 allllekssssa cook-off cook97 greedy math taran_1407 None 0
KUNIQUE K-Unique Sequence fushar 32 19.02 fushar march11 medium None 0
BUYING2 Buying Sweets gennady.korotkevich 8781 45.46 ad-hoc cook27 gennady.korotkevich None 0
SPANTREE Spanning Tree None 27 31.36 acm17kgp constructive graph interactive kgp17rol mst sidhant007 None 0
EXGCD Expected Greatest Common Divisor pieguy 106 49.69 cook29 easy-medium number-theory pieguy None 0
EVILBOOK Evil Book laycurse 51 19.48 hard laycurse march12 None 0
CRISIS CPI Crisis None 53 23.53 kr_abhinav None 0
SUMNCR Summation over nCr None 71 22.66 aditya10_ aditya10_ easy-medium implementation observations pelt2019 None 0
TAPOINT Find The Point None 81 38.1 cook74 geometry math medium tuananh93 None 0
GCD2 GCD2 admin 5269 27.45 admin None 0
ENTEXAM Entrance Exam None 2065 13.12 loop simple snckpb16 xcwgf666 None 0
TWOCHEFS Two Chefs pieguy 20 21.7 chefs cook03 medium pieguy two None 0
CKROACH Killing Gs laycurse 31 92.6 challenge laycurse may12 None 0
MINSHIFT Cyclic Shifts None 14 13.43 medium segment-tree snckpb16 xcwgf666 None 0
TASHIFT Shift The String tuananh93 1407 25.79 tuananh93 None 0
CHEFVEC Chef and Vectors None 16 33.33 cook65 digit-dp dynamic-programming hard memoization mgch None 0
MIXTURES Mixtures admin 1623 30.82 admin None 0
GENIND Generalized Independent Sets friggstad 8 52.38 april11 friggstad hard None 0
KOL15B Finding Hardest Sum Value None 355 39.01 acmkol15 devuy11 dynamic-programming easy kadane maximum maximum-sum maxsum None 0
CHEFPOLY Chef and Polygons None 35 23.15 geometry ltime33 medium mgch None 0
BYTEISLE Byteknights and Byteknaves fushar 127 16.91 dec10 easy fushar None 0
DISTNUM3 Primitive Queries None 31 17.06 mgch None 0
ROBOGAME A Game of Robots admin2 1353 29.37 admin2 None 0
POSTTREE Post Tree None 111 19.55 dfs easy-medium gainullinildar lca ltime48 None 0
FCUBE The First Cube xcwgf666 51 9.14 ltime21 xcwgf666 None 0
MISINT2 Misinterpretation 2 anton_lunyov 29 22.08 anton_lunyov hard jan12 None 0
LECOINS Little Elephant and Colored Coins witua 57 28.46 dynamic-prog hard march13 shortest-path simple-math witua None 0
STEPUP Stepping Up anshuman_singh 150 28.49 anshuman_singh None 0
TANGLED Entangled Strings utkarsh_lath 39 9.8 lcp ltime02 suffix-array utkarsh_lath None 0
EZNO Easy Numbers None 115 27.25 backtracking cook70 easy enumeration pdn precomputation wwwwodddd None 0
COALSCAM Coal Scam yellow_agony 308 29.65 cook26 easy kruskal yellow_agony None 0
CHEFSQ Chef and his Sequence karthikv1392 4323 21.2 None 0
HHAL Harrenhal kostya_by 837 51.68 ad-hoc cakewalk kostya_by ltime15 None 0
KNODES Path containing K Nodes None 164 17.87 bfs cook60 devuy11 medium None 0
CHEFST Chef and the stones None 1298 28.36 ad-hoc arithmetic cakewalk dec15 greedy tapasjain01 None 0
SEAORD Sereja and Order sereja 50 38.22 sereja None 0
HCLEAN House Cleaning xcwgf666 55 39.74 easy hypercube ltime23 xcwgf666 None 0
MOU1H Mountain Holidays witalij_hq 207 26.38 july13 lcp medium string suffix-array witalij_hq None 0
AVGPR Average of Pairs None 379 18.73 anuj_2106 april18 array looping math None 0
HX Forces in the crystal admin 97 62.12 admin None 0
MATCHS Matches None 446 24.51 mishaprigara None 0
LUCKYBAL Little Elephant and Balance witua 157 39.81 cook22 easy witua None 0
CNTDIGIT Count Digits witua 17 11.45 cook49 dp medium-hard witua None 0
NITIKA Whats in the Name None 2498 29.6 iamabjain implementation july17 None 0
LCPESY Longest Common Pattern shiplu 2138 36.84 shiplu None 0
AMXOR XOR Sum satej 56 44.32 cook34 dynamic-prog medium satej None 0
CUSTPRIM Payton numbers kevinsogo 26 33.33 feb15 kevinsogo None 0
TREEGAME Tree Game witua 219 34.34 cook49 easy games greedy pointers witua None 0
FLOW016 GCD and LCM vicky002 9820 25.71 None 0
ABDTOLL Abdullah and Toll Discounts None 92 31.38 abdullah768 greedy ltime72 taran_1407 tree-dp None 0
CONNECT Find a special connected block shangjingbo 46 10.29 april12 hard shangjingbo None 0
KFORK Knight Fork piyushkumar 69 19.1 brute-force ltime11 piyushkumar simple None 0
YALOP Trial of Doom spooky 28 37.5 july11 medium spooky None 0
ANURRZ Random Rudreshwar anudeep2011 150 25.56 anudeep2011 cook54 dynamic-prog medium None 0
TRAINING Selection for Training Camps flying_ant 33 20.71 cook21 flying_ant medium None 0
FAKEBS Fake Binary Search None 207 17.33 abdullah768 binary-search may18 None 0
COURSE Obstacle Course pieguy 126 4.46 aug10 easy pieguy None 0
CHEFELEC Chefland and Electricity admin2 260 21.66 admin2 greedy july16 simple None 0
DIAMOND Need More Diamonds kaushik_iska 133 26.41 dp easy kaushik_iska oct12 None 0
MATCH2 Match the Streams None 96 9.14 binary-search data-structure ltime64 medium mergesort taran_1407 teja349 None 0
H2 Kayaks admin 40 16.49 admin None 0
H3 Congruent triangles admin 17 21.7 admin None 0
H1 A puzzle game admin 1107 25.89 admin None 0
H4 Just a simple sum admin 88 3.64 admin None 0
H5 Paragraph Formatting admin 18 14.47 admin None 0
CHEFSOC Chef and Soccer berezin 51 13.95 berezin dynamic-programming easy-medium march19 pattern taran_1407 None 0
MAXMATCH Maximum Matching amitpandeykgp 49 75.21 amitpandeykgp combinatorics dynamic-prog ltime24 medium None 0
IDXSUM Zawad and Index Sum None 18 40.0 cook-off cook107 solaimanope None 0
APPROX Approximately xcwgf666 2128 53.58 march13 simple simple-math xcwgf666 None 0
DRGHTS Draughts sereja 177 17.09 graphs sereja feb14 easy None 0
CIELWEB Ciel and Communications System laycurse 3 37.5 cook20 hard laycurse None 0
ENIG10 Xorangements None 16 50.0 kr_abhinav None 0
MAXPR Maxim and Progressions sereja 223 20.1 combinatorics dp easy june14 sereja None 0
TRIPCOST Optimal Trip utkarsh_lath 44 34.0 greedy ltime02 utkarsh_lath None 0
CARDMGK Chef and Card Trick None 295 25.85 easy kingofnumbers observations prefix snck1a19 sorting taran_1407 None 0
POTATOES Farmer Feb mischievous_me 6608 59.94 ad-hoc april14 cakewalk mischievous_me None 0
RECVSEQ Recover the Sequence None 893 34.77 anachor cook-off cook106 None 0
HOLES Holes in the text anton_lunyov 17648 38.67 cook06 easy anton_lunyov None 0
L56GAME Chef and Game with Sequence None 1586 28.42 cakewalk kefaa ltime56 taran_1407 None 0
PACKBAND Packing the Golden Triangles flying_ant 132 17.03 cook10 easy flying_ant None 0
HARMONY Harmonious Decorating friggstad 8 53.33 friggstad hard may11 None 0
REACHRIG Reaching the Rig admin 14 6.83 admin None 0
BORDER Prefix borders None 56 13.94 binary-lifting kingofnumbers kmp ltime57 medium tree None 0
HELLO Hello Hello vinayak garg 1342 35.4 aug13 simple simple-math vinayak garg None 0
SUMDIS Sum of distances None 25 24.72 divide-and-conq geometry graph hard march17 r_64 None 0
LISLDS LIS and LDS None 28 30.1 kevinsogo lis medium snckpb16 None 0
GROWGOLD Golden Trees flying_ant 129 8.12 cook23 easy flying_ant None 0
BUDDYNIM Buddy NIM None 286 31.79 bciobanu easy game-theory greedy snckpe19 taran_1407 None 0
EXTRAN Bear and Extra Number None 757 43.22 errichto march17 simple sorting None 0
FINDSEQ Find a Subsequence rustinpiece 38 21.24 feb12 hard rustinpiece None 0
SUBMIN Little Elephant and Subarrays darkshadows 724 51.69 darkshadows None 0
CHEFDTRE Chef and Sets furko 75 17.86 data-structure furko ltime25 order-statistic treap None 0
IPCTRAIN IPC Trainers admin2 812 27.41 admin2 easy greedy heap july17 stl None 0
CO92REST Chef Restores an Array None 57 16.7 cook92 datastructure easy-medium kefaa None 0
OLYMPIC Gifts at Olympics flying_ant 26 10.43 cook23 easy flying_ant None 0
DIVIDING Dividing Stamps kostya_by 6796 49.7 cakewalk cook44 kostya_by simple-math None 0
MATRIX2 Matrix xcwgf666 337 28.73 dp ltime03 xcwgf666 None 0
CHEFBR Chef and Bracket-Pairs berezin 266 40.47 berezin None 0
CHEFBM Chef and Strange Matrix berezin 229 15.01 berezin easy implementation may14 None 0
STRTF Strange Transform None 35 26.63 bciobanu bitwise-operatn medium meet-in-middle precomputation snckpe19 taran_1407 None 0
EST Equivalent Suffix Tries gennady.korotkevich 23 29.87 gennady.korotkevich hard hashing july12 strings None 0
HOB Hotel Balifornia vinayak garg 16 17.89 jan13 medium pigeonhole vinayak garg None 0
SHOOTING Shooting witua 87 13.33 bruteforce cook49 greedy simple witua None 0
EFFPAINT Efficient Painting pieguy 40 60.48 ad-hoc challenge feb13 pieguy None 0
SNCOUP Snakes and their coup against The mongoose admin2 236 27.29 admin2 easy-medium greedy snckpb17 None 0
SFXPAL Suffix Palindromes None 77 45.71 bciobanu combinatorics easy-medium modular-arith snckel19 taran_1407 None 0
LEALCO Little Elephant and Alcohol witua 345 43.22 backtracking bitmasking easy jan13 witua None 0
AMR15C Kalakeya None 197 13.08 acmamr15 constructive greedy implementation medium suh_ash2008 None 0
CHEFLR Chef and Left-Right berezin 706 31.49 adhoc basic-math berezin sept14 simple None 0
CHPLGNS Chef and Polygons antoniuk1 397 30.29 antoniuk1 cakewalk geometry june15 None 0
FLOW008 Servant vicky002 16217 56.92 None 0
FLOW007 Reverse The Number vicky002 22613 43.37 None 0
AMSTRING Andrew and the Strings witua 123 37.38 cook33 easy sliding-window strings witua None 0
FLOW005 Smallest Numbers of Notes vicky002 13811 60.07 None 0
FLOW004 First and Last Digit vicky002 23815 57.57 None 0
FLOW002 Find Remainder vicky002 29631 62.16 None 0
FLOW001 Add Two Numbers vicky002 39882 53.54 None 0
CARDSHUF Card Shuffle thocevar 252 35.32 hard jan12 thocevar None 0
SPECTAC Spectacular Activity Selection None 59 61.0 activity-selection andrei1998 combinatorics dynamic-programming greedy medium snckpe19 taran_1407 None 0
CROWD Three is Crowd vamsi_kavala 279 15.95 maths matrix-expo sep12 vamsi_kavala None 0
CHEFGRPH Time to Study Graphs with Chef malinovsky239 69 16.27 dp feb15 malinovsky239 medium None 0
EQUAKE Earthquake pavel1996 113 23.68 aug14 lazy medium pavel1996 segment-tree None 0
KPRIME Count K-Primes vamsi_kavala 1388 26.82 july13 memoization sieve simple vamsi_kavala None 0
STEPNUMS Stepping Numbers MichaelD 9 11.54 MichaelD aug10 hard None 0
AMSGAME1 Subtraction Game 1 satej 4920 46.79 cakewalk cook34 gcd satej None 0
PCYCLE Permutation Cycles admin 4815 44.49 admin None 0
FRGTNLNG Forgotten Language None 5557 53.95 basic-prog cakewalk cook62 kostya_by strings None 0
GANGAAM Interrogating Gangsters satej 56 35.79 cook42 easy greedy satej None 0
OJUMPS Chef-jumping berezin 5615 45.09 ad-hoc berezin cakewalk may14 None 0
STADIUM The Sports Stadium admin 351 28.47 admin None 0
FLUSHOT Flu Shot Lineup friggstad 121 18.95 easy friggstad jan11 None 0
LELEMON Little Elephant and Lemonade witua 1026 53.13 ad-hoc aug13 simple sorting witua None 0
NEXTNUM Rank of the Number vineetpaliwal 212 26.83 bruteforce cakewalk cook40 enumeration factorial vineetpaliwal None 0
LEDIV Little Elephant and Divisors witua 1902 20.12 cook28 simple simple-math witua None 0
CNTDSETS Counting D-sets mugurelionut 90 57.34 combinatorics hard inclusn-exclusn jan14 mugurelionut None 0
COUNTREL Count Relations nssprogrammer 152 28.88 easy jan11 nssprogrammer None 0
COMMUTE The Morning Commute friggstad 1951 53.16 cook05 easy friggstad None 0
CIELBTL Ciel and Battle Arena laycurse 18 37.5 cook17 laycurse medium None 0
DEVHAND Devu and his three Hands admin2 19 17.36 admin2 None 0
CHSQARR Chef and Rectangle Array None 261 31.81 antoniuk1 dynamic-programming june16 medium partial-sums None 0
SEREJA Sereja and Data Structures Rubanenko 53 25.32 Rubanenko dec12 medium simple-math None 0
LEBLOCKS Little Elephant and Blocks witua 37 29.93 combinatorics dp june14 medium witua None 0
M5 Overlapping discs admin 8 40.0 admin None 0
M4 Toll Trolls admin 7 22.58 admin None 0
M1 The Mine Field admin 8 20.45 admin None 0
TRCNTCT Tree Connectivity melnik 29 35.48 cook85 dfs divide-and-conq hard melnik segment-tree None 0
M3 Soccer League admin 34 15.63 admin None 0
M2 Motorbike Racing admin 12 25.6 admin None 0
COUPLES Couples sit next to each other None 15 18.89 kingofnumbers ltime57 med-hard segment-tree None 0
FBCHEF Final Battle of Chef adurysk 42 32.24 adurysk april14 bit medium-hard segment-tree None 0
INTERVAL Interval Game None 103 6.21 kingofnumbers None 0
PLANEDIV Plane Division None 170 16.43 cenadar dec15 euclidean gcd parallel sets simple sorting None 0
TMSLT Team Split shiplu 477 18.84 march14 shiplu simple sorting None 0
LEPAINT Little Elephant and Painting witua 354 58.03 dp july14 medium witua None 0
BYTESHOP Bytelandian Shoppers syco 15 37.5 hard sept10 syco None 0
XYHUMOQ A humongous Query None 34 21.89 euclidean-algo include_sajal jan18 medium None 0
LEMOUSE Little Elephant and Mouses witua 188 39.27 dynamic-prog june13 simple witua None 0
COOLGUYS Cool Guys Rubanenko 411 24.84 Rubanenko easy number-theory sept13 None 0
HYPER Hypertrees gennady.korotkevich 16 64.0 dec11 gennady.korotkevich hard None 0
CVOTE Chef of the Year kaushik_iska 750 47.19 jan13 kaushik_iska map simple sorting None 0
LRQUER L-R queries None 189 15.61 easy ltime54 mgch segment-tree None 0
MX Sorting device admin 8 10.06 admin None 0
CKSCHOOL Preferred Cooking Schools flying_ant 8 13.95 cook10 flying_ant hard None 0
CBARS A Wonderful Chocolate witalij_hq 54 45.03 matrix-expo nov12 simple witalij_hq None 0
LSTGRPH Lost Graph kostya_by 110 23.86 bfs bipartite cook52 easy-medium graphs kostya_by None 0
SUBSGM Nice SubSegments xcwgf666 107 23.04 easy greedy ltime10 segment-tree xcwgf666 None 0
ECODE Exit code anhdq 18 7.69 anhdq aug10 medium None 0
CBARG Chef and Memory Limit witalij_hq 831 40.47 cakewalk june15 simulation witalij_hq None 0
RIN Course Selection cgy4ever 156 49.72 cgy4ever None 0
TAPAIR Counting The Important Pairs tuananh93 108 29.98 dfs-order hard jan14 tuananh93 xor None 0
COLCHAIN Colorful Chain gennady.korotkevich 30 38.46 cook16 gennady.korotkevich medium None 0
CAOS3 CAO Stage-3 kaushik_iska 60 32.95 dp easy-medium kaushik_iska oct13 sprague-grundy None 0
CIELBALL Ciel and Ball Guessing Game laycurse 8 30.3 binarysearch cook24 dp hard laycurse None 0
OPTCODE Optimize The Slow Code admin2 165 40.0 admin2 gwr17rol simple sorting None 0
CALLSCHE Call Center Schedule None 47 13.35 cenadar feb16 graph maxflow medium minimum-cut None 0
PRIME1 Prime Generator admin 7910 16.24 admin None 0
DIVLAND Division of Lands witalij_hq 35 46.2 witalij_hq None 0
SKIING Skiing None 216 37.33 cook88 greedy kingofnumbers kingofnumbers likecs scc sorting None 0
CAKE1AM Chef and the Cake I satej 423 38.29 cakewalk cook42 geometry satej None 0
TABISHOP Bishops tuananh93 15 14.14 ad-hoc cook32 line-sweep medium-hard order-statistic tuananh93 None 0
SIMPSTAT Simple Statistics None 3029 29.37 cakewalk ltime34 sorting xcwgf666 None 0
ANUBTT Build the Tree anudeep2011 23 25.29 anudeep2011 cook46 hard None 0
WINDOW2 Whole submatrix anton_lunyov 126 18.33 anton_lunyov cook06 easy None 0
ANUBTG Suraj goes shopping anudeep2011 3420 50.46 anudeep2011 cook54 easy greedy None 0
MTRICK Magic Trick yellow_agony 402 21.86 easy-medium jan14 programming simple-math yellow_agony None 0
FARASA Furik and Rubik and Sub Array sereja 113 27.24 fft hard july13 maths sereja None 0
TALAZY Lazy Jem None 3106 47.11 ad-hoc cakewalk cook74 tuananh93 None 0
AMSEQT Sequence Transmission satej 39 32.69 bit cook34 dynamic-prog easy satej None 0
VOTERS Discrepancies in the Voters List admin 7189 30.87 admin None 0
SQNUMBF Square in numbers None 287 10.34 ltime37 medium number-theory pavel1996 None 0
DIVISORS Something About Divisors anton_lunyov 15 14.06 anton_lunyov aug11 hard None 0
DIGROT Digit Rotation pieguy 259 18.32 cook14 easy pieguy None 0
EDSTGRID Edit Distance on Grid ACRush 29 59.76 ACRush None 0
NUKES Nuclear Reactors admin 9546 31.5 admin None 0
FDIVGAME Floor Division Game None 187 35.08 combinatorial easy game-theory kevinsogo snckql16 sprague-grundy None 0
GRAYSC The Gray-Similar Code shangjingbo 452 20.85 july12 medium pigeonhole search shangjingbo None 0
CAKEDOOM Doom Bakes Cakes kaushik_iska 284 13.47 greedy june12 kaushik_iska simple None 0
BTREE Union on Tree wjmzbmr 56 32.35 wjmzbmr None 0
FCTRL Factorial admin 40932 34.14 admin None 1
LCH15JAB Piece of cake pavel1996 6193 50.36 ad-hoc ltime20 pavel1996 None 0
GRAPLANE Graph on a Plane gennady.korotkevich 18 37.04 cook16 gennady.korotkevich medium None 0
DIGITS2 Product of Digits Again pieguy 10 36.67 cook09 hard pieguy None 0
CHFQUEUE Chefs in Queue vineetpaliwal 209 26.29 arithmetic ltime05 modulo multiplication queue stack vineetpaliwal None 0
RESQ Arranging Cup-cakes shettynamit 5649 42.49 factors june12 prime shettynamit simple None 0
CPCOMP Coprime Components None 12 4.56 bciobanu dsu graphs medium-hard number-theory oct18 None 0
KNIGHTS N Knights Problem pieguy 43 29.73 cook04 medium pieguy None 0
ROTATION Fun with Rotation devuy11 743 31.58 adhoc cakewalk devuy11 sept14 None 0
PROC18E Good Speech None 18 27.4 meetsid20 None 0
PROC18A The Great Run None 1727 36.21 meetsid20 None 0
LEMUSIC Little Elephant and Music witua 499 22.0 april13 easy greedy sorting witua None 0
STRDIG Chef and The String of Digits rustinpiece 17 9.49 ad-hoc cook37 easy-medium implementation rustinpiece None 0
FLAGS Counting Flags kostya_by 1054 48.43 combinatorics cook47 easy kostya_by None 0
FLOW009 Total Expenses vicky002 10005 25.89 None 0
SEAGM2 Sereja and Game 2 sereja 119 21.66 easy-medium july15 maths probability sereja None 0
HORSES Racing Horses vamsi_kavala 18225 34.32 sep12 sorting vamsi_kavala None 0
TIMEASR Time measure None 222 27.04 ad-hoc kaizer oct15 simple None 0
MINVOTE Minions and Voting admin2 424 30.87 admin2 binary-search easy-medium march18 None 0
STREETTA The Street tuananh93 104 23.75 march14 medium-hard segment-tree tuananh93 None 0
CONPOIN Connect Points pavel1996 12 36.21 graph hard june15 pavel1996 None 0
PRIMEDST Prime Distance On Tree cgy4ever 480 28.13 aug13 cgy4ever dfs fft graph hard None 0
MTYFRI Mighty Friend None 376 26.51 bhushan_ easy may18 sorting None 0
AGECAL Age Calculator None 522 26.35 arpa implementation ltime67 None 0
ABCSTR ABC-Strings kostya_by 766 25.74 ad-hoc cook44 kostya_by map simple None 0
BANROB Bank robbery None 256 34.72 binary easy kaizer math sept15 None 0
FIRESC Fire Escape Routes vamsi_kavala 2059 31.99 dfs march13 simple union-find vamsi_kavala None 0
EQUALITY Equality kostya_by 1195 51.2 cook57 easy kostya_by math None 0
ONCHESS Online Chess None 318 42.66 cook88 easy kingofnumbers kingofnumbers likecs looping None 0
UASEQ Chef and sequence furko 164 35.36 adhoc easy furko sept14 None 0
DBOY Pizza Delivery khadarbasha 1520 30.16 dec12 dp khadarbasha simple None 0
RRPLAYER Player Rubanenko 805 67.66 Rubanenko cook53 dynamic-prog easy-medium probability None 0
DIGITLIS Digit Longest Increasing Subsequences None 53 32.77 alex_2oo8 cook78 easy-medium lis None 0
CENTREE Centeroid None 202 35.65 ad-hoc alei constructive cook83 graph tree None 0
FLOW018 Small Factorial vicky002 16873 54.75 None 0
GERALD09 Chef and Rectangle Genome gerald 85 81.45 challenge gerald greedy july14 None 0
GERALD08 Chef and Tree Game gerald 32 31.54 gerald None 0
FLOW014 Grade The Steel vicky002 8855 50.55 None 0
FLOW015 Gregorian Calendar vicky002 2828 22.66 None 0
GERALD05 Chef and Combinatorics gerald 126 36.6 combinatorics cook41 dp gerald medium None 0
FLOW017 Second Largest vicky002 17954 51.14 None 0
GERALD03 Chef Goes Through Segments gerald 351 35.65 cook41 easy gerald greedy None 0
FLOW011 Gross Salary vicky002 9232 35.68 None 0
FLOW013 Valid Triangles vicky002 13418 53.76 None 0
BASE Our Base is Under Attack None 103 7.5 dec16 kevinsogo None 0
FLOW006 Sum of Digits vicky002 31664 50.02 None 0
NAME1 Name Reduction kaushik_iska 1684 40.29 ad-hoc cakewalk kaushik_iska may13 None 0
GENARSEQ Generalized Arithmetic Progression Free Sequence anton_lunyov 141 21.51 anton_lunyov cook15 easy None 0
TROOT Roots of a Tree xcwgf666 26 17.33 dfs easy-medium ltime12 segment-tree xcwgf666 None 0
LUCKY10 Little Elephant and Order witua 139 24.41 easy greedy oct12 witua None 0
FROGV Chef and Frogs berezin 1816 24.02 berezin simple july14 dp 3.0 1
NOMATCH Maximise the Sum bk2dcradle 1571 33.25 bk2dcradle None 0
CHEFCK Chef and Cake abhra73 182 14.18 abhra73 None 0
CHEFCH Chef and Chain berezin 1391 42.11 berezin feb15 None 0
QPOLYSUM Quasi-Polynomial Sum anton_lunyov 12 31.67 anton_lunyov dec12 hard math None 0
L2GRAPH Graphs in Euclidean Space friggstad 10 48.15 april11 challenge friggstad None 0
ZUBWALLT Organize The Wallet None 43 41.82 gwr17rol medium-hard zubaerkh None 0
WCOUNT Word Couting yellow_agony 661 29.28 easy feb12 yellow_agony None 0
TEAMSEL Team Selection admin 238 6.02 admin None 0
CIELNUM3 Ciel Numbers III laycurse 15 23.88 cook24 laycurse medium None 0
CIELNUM2 Ciel Numbers II laycurse 442 20.13 cook20 easy laycurse None 0
CIELNUM1 Ciel Numbers I laycurse 134 29.65 cook20 easy laycurse None 0
SPOTWO Superpowers of 2 kuruma 697 35.22 easy kuruma nov13 None 0
GRAPHAND AND on Graph None 58 31.78 jtnydv25 None 0
SEASHUF Sereja and Shuffling sereja 18 53.7 sereja None 0
MCHEF MasterChef ma5termind 239 11.36 data-structure dynamic-prog easy-medium july15 ma5termind None 0
PWRTREE Power Tree None 39 28.03 alei constructive cook99 directed easy-medium taran_1407 tree None 0
EOSUBSEQ Even Odd subsequences admin2 143 40.36 admin2 None 0
TEAMSIZE Team Formation vamsi_kavala 28 31.11 deque medium oct12 vamsi_kavala None 0
SEAND2 Sereja and Number Division 2 sereja 43 61.27 sereja None 0
SEAGCD Sereja and GCD sereja 153 18.48 sereja None 0
CHEFTMA Chef and Time Machine berezin 441 29.13 berezin greedy jan16 simple stl None 0
XORNEY XOR! Wait for it None 1400 16.08 cakewalk pelt2019 tds115 tds115 None 0
TABLET Buying New Tablet None 2079 59.76 ad-hoc cakewalk cook103 implementation kingofnumbers None 0
GIVCANDY Sharing Candies None 365 30.31 bezout-identity euclids-algo gcd kevinsogo linear-comb simple snckpa16 None 0
NMNMX No Minimum No Maximum None 230 19.32 easy july18 shubhscoder None 0
NUMBGAME Number Game None 73 10.91 acm17kgp balajiganapath dfs graph kgp17rol medium number-theory None 0
ATM ATM None 525 42.1 emptyskull None 0
ADIGIT Chef and Digits berezin 586 19.94 berezin april14 easy adhoc 3.0 0
TWOROADS Two Roads tuananh93 25 22.29 discretization geometry hard sept13 tuananh93 None 0
LKYEDGE Lucky Edge fudail 11 11.11 dfs fudail hard oct17 tree-dp None 0
SHORT2 Short II gennady.korotkevich 27 28.43 dec11 gennady.korotkevich hard None 0
SEZ Special Economic Zone cgy4ever 39 39.17 cgy4ever may15 medium-hard None 0
RRSUM Sum Queries Rubanenko 3439 38.32 Rubanenko cook48 simple-math None 0
BUYLAND Buying Land thocevar 24 31.13 hard march11 thocevar None 0
KNPSK Knapsack Problem kostya_by 653 15.65 kostya_by None 0
TYTACTIC Tywins Tactics pragrame 409 22.06 cook35 dfs pragrame simple None 0
NUMPATH Number of Paths vineetpaliwal 101 18.09 cook40 dynamic-prog fenwick medium vineetpaliwal None 0
SPELLBOB Spell Bob admin2 1671 28.22 admin2 admin2 aug18 cakewalk likecs None 0
RRECIPE Recipe Reconstruction yellow_agony 2651 33.6 cook26 simple simple-math yellow_agony None 0
CIEL8STR Ciel and New Menu laycurse 335 19.75 cook17 easy laycurse None 0
QUADFUNC Quadratic Functions None 199 44.41 wittyceaser None 0
REFUELS Racing Refuels None 14 15.53 errichto None 0
ADDMUL Addition and Multiplication devuy11 404 18.28 devuy11 july15 lazypropagation medium segment-tree None 0
ANCOIMP Anticommutative implication kaizer 19 15.33 kaizer None 0
DX Pack the balls in a box! admin 12 54.55 admin None 0
AMBIDEX Ambidextrous Chefs pieguy 10 38.1 challenge jan12 pieguy None 0
PALIN3 3-Palindromes kostya_by 60 13.64 cook44 kostya_by manacher medium string None 0
COINCHNG Paying optimally utkarsh_lath 32 15.08 binarysearch greedy ltime02 utkarsh_lath None 0
BESTBATS Top Batsmen flying_ant 2126 45.87 cook21 easy flying_ant None 0
BFTT Balsa For The Three None 1672 43.86 allllekssssa bruteforce cook-off cook97 taran_1407 None 0
ABGAME A-B Game admin2 219 28.43 admin2 cook100 easy game-theory nim observations taran_1407 None 0
DECORATE Lucy and the Flowers xcwgf666 23 23.72 burnside dec13 hard hashing xcwgf666 None 0
VAIMIN Vaibhav and Ministers None 39 14.29 april18 combinatorics dynamic-programming generalized-catalan medium-hard vaibhav18197 None 0
COUPON Online Shopping vamsi_kavala 442 18.98 dynamic-prog ltime01 simple-math vamsi_kavala None 0
COPS Cops and the Thief Devu None 6894 54.08 cakewalk cook60 devuy11 None 0
CHEFAXR Chef and Submatrix furko 204 34.19 bit furko ltime25 matrix xor None 0
MINIMAX2 Game of Theory None 0 0.0 aashu_k None 0
TAPALIN Palindrome tuananh93 725 33.76 cook32 matrix-expo modulo simple simple-math tuananh93 None 0
TILEBAG Bag of Tiles None 58 22.95 wittyceaser None 0
SONYASEG Sonya and Segments None 67 28.23 barenuz combinatorics cook95 easy geometry line looping None 0
SUBINVER SubInversing None 28 19.32 gainullinildar hashes ltime48 medium-hard persistence segment-tree None 0
D6 Count the squares admin 218 24.23 admin None 0
D7 Alien Clock admin 10 23.4 admin None 0
D4 Primes in the GCD table admin 72 13.2 admin None 0
D2 The Lucky Draw admin 113 10.37 admin None 0
D3 The battlefield admin 21 61.54 admin None 0
D1 Product of divisors admin 295 6.7 admin None 0
CHEFNUM Chef and Amazingness of Numbers None 29 18.97 dynamic-programming enumeration may16 prateekg603 None 0
MDIST Devu and Manhattan Distance amitpandeykgp 145 36.88 amitpandeykgp easy ltime24 segment-tree None 0
KILOWHAT A Fence for Byteland pieguy 23 45.68 challenge jan13 pieguy polygons None 0
TRAVELAL Travel to all Points None 35 17.37 arpa binary-search ltime50 None 0
ANUSFR Substring and five rules anudeep2011 17 26.36 anudeep2011 cook51 greedy hard segment-tree two-pointers None 0
COUNTPAL Count palindromes anhdq 271 36.59 anhdq easy oct10 None 0
LECANDY Little Elephant and Candies witua 4633 54.91 array cakewalk june12 witua None 0
FLYDIST Flight Distance thocevar 30 27.92 feb12 hard thocevar None 0
REARRSTR Devu and decorating birthday cake admin2 479 29.99 admin2 cook58 easy greedy None 0
SEASNAKE Sereja and Snake sereja 13 40.0 challenge sept13 sereja None 0
CHEFTWOS Chef and Two String berezin 119 23.76 berezin dynamic-programming easy oct16 None 0
TAAND And Operation tuananh93 1429 27.76 tuananh93 None 0
SNCK05 SUM12 admin 32 24.48 admin None 0
SNCK04 Rational Numbers admin 269 17.36 admin None 0
SNCK03 Alternating Permutations admin 14 41.46 admin None 0
SNCK02 Powerful Strongholds admin 9 56.25 admin None 0
SNCK01 The Matrix Game admin 124 29.64 admin None 0
RETPO Reach The Point witalij_hq 842 33.34 july14 maths simple witalij_hq None 0
MGCRNK Magic Rankings kuruma 774 30.39 dec12 dpmgc kuruma simple None 0
BUILDIT Expected Buildings None 21 12.99 june18 likecs matrix-expo medium-hard recurrences teja349 teja349 None 0
CHEFRES Chef Restaurant None 948 27.08 binary-search easy kingofnumbers line-sweep ltime64 taran_1407 None 0
OMAX Omax anhdq 125 20.73 anhdq easy march11 None 0
KCOMPRES Coordinate Compression None 108 13.58 aug18 binary-search likecs likecs medium segment-tree None 0
POUR1 Pouring water admin 977 20.57 admin None 0
CHXORR Chef and Pie furko 69 8.75 bitwise-operatn easy furko greedychxorr ltime04 None 0
BWGAME Black-white Board Game xcwgf666 63 28.57 xcwgf666 None 0
TREEUNAT Tree Unattractiveness admin2 35 6.14 admin2 cook100 dynamic-programming medium taran_1407 tree None 0
RRATING Restaurant Rating vamsi_kavala 187 18.65 easy heaps july12 vamsi_kavala None 0
LOGGERS Logging Game pieguy 46 42.96 medium oct10 pieguy None 0
RRGAME Game Rubanenko 137 18.92 Rubanenko cook38 medium None 0
CNTHEX Counting Hexagons rustinpiece 38 39.23 hard rustinpiece sep11 None 0
SEASTONE Sereja and Stones None 20 15.38 dynamic-programming medium oct16 sereja None 0
DIVSET Divide the Set None 119 20.9 arpa binary-search ltime50 None 0
ANKINTER Intervals and subarrays None 13 5.25 code_master01 snck151c None 0
CAKECUT Cutting Cake None 100 43.69 bitwise-operatn cook71 easy-medium kingofnumbers None 0
TREEFUN Tree Fun gennady.korotkevich 35 20.07 cook27 gennady.korotkevich graph lca None 0
WW2 World War 2 darkshadows 226 35.94 cook50 darkshadows exponentiation medium None 0
ANUAAA Anup at Amrithapuri anudeep2011 40 43.23 anudeep2011 cook54 medium-hard mo-algorithm None 0
PUSHFLOW Push the Flow! kostya_by 36 26.95 aug14 graphs hard heavy-light kostya_by trees None 0
LONGART Longest Article iscsi 7 9.21 bipartite graph hard iscsi march13 maximum-flow None 0
RHOUSE Houses and Restaurants xcwgf666 150 16.39 easy jan12 xcwgf666 None 0
WORKCHEF Chef and special numbers None 120 11.39 digit-dp july16 maths medium omelyanenko None 0
STRBIT How to Repaint a Fence witua 320 35.22 bit cook56 easy segment-tree witua None 0
FIBTREE Fibonacci Numbers on Tree dzy493941464 65 18.62 dzy493941464 hard heavy-light math persistence segment-tree sept14 None 0
QPOINT Queries With Points tuananh93 34 17.1 data-structure geometry hard nov13 tuananh93 None 0
PUZZLES Newspaper Puzzle friggstad 18 37.5 cook05 friggstad medium None 0
KALADIN Proprietary Probabilistic Problem None 33 42.72 grebnesieh gwr17rol medium probability None 0
NI05 Retail Shop iitgfaculties 93 61.36 iitgfaculties None 0
NI04 Small Airport iitgfaculties 38 23.67 iitgfaculties None 0
NI03 Weapons iitgfaculties 22 44.9 iitgfaculties None 0
NI02 KGP Summers iitgfaculties 263 33.47 iitgfaculties None 0
NI01 Jurassic Park iitgfaculties 157 26.06 iitgfaculties None 0
DIVIDE Dividing the Students xcwgf666 63 34.75 binary bipartiteness easy graph ltime18 xcwgf666 None 0
CIELHACK Ciel and password cracking laycurse 12 42.86 dp hard laycurse oct12 None 0
TASUFFIX Very Long Suffix Array tuananh93 26 54.24 binary-tree cook36 hard splay-tree tuananh93 None 0
CLUE Get a Clue pieguy 8 20.51 hard oct10 pieguy None 0
FUNC Chef and Functions viv001 132 14.04 binary-search june14 medium number-theory viv001 None 0
DOWNLOAD Alien Chefs flying_ant 140 2.08 bit cook23 flying_ant medium sorting None 0
COLORDIS Nearest Color None 12 14.93 anachor cook-off cook106 None 0
MKSTR Make a String None 27 21.38 dynamic-programming fekete fekete likecs ltime62 medium string-hashing tries None 0
GRIDGAME Game on a Grid pieguy 12 14.29 cook29 game medium-hard pieguy None 0
ADAPWN Ada Pawns None 9 18.55 alei None 0
CAKE2AM Chef and the Cake II satej 9 28.07 bipartite cook42 geometry max-indep-set maxflow medium-hard satej None 0
CLOSESTQ Closest points queries None 18 9.75 divide-and-conquer gainullinildar ltime47 medium-hard sets sqrt None 0
STDYTAB Steady tables pavel1996 226 27.31 combinatorics dp june15 pavel1996 None 0
TAXITURN Taxi Making Sharp Turns admin2 64 10.12 acm17kgp admin2 easy geometry kgp17rol None 0
TAAPLUSB A Plus B Again! tuananh93 428 43.72 cook36 easy maths probability tsaplusb tuananh93 None 0
ALEXTASK Task for Alexey None 1898 15.45 basic-prog lcm nov16 rubanalexey simple None 0
PHYSICS Physics Class piyushkumar 482 27.54 binary-search hash-map ltime17 piyushkumar simple-easy sorting None 0
KNIGHTMV Correctness of Knight Move anton_lunyov 1695 24.55 anton_lunyov cook11 easy None 0
DIGFORST Digits Forest anhdq 41 17.39 anhdq hard may12 None 0
CAPTCITI Snakes capturing the Mongoose Cities admin3 60 30.33 admin3 medium snckpb17 sorting tree-dp None 0
GCDCNT Chef and Gcd Queries None 116 20.96 inclusion-exclusion march18 medium mobius vipsharmavip None 0
MONOPLOY Gangsters of Treeland utkarsh_lath 103 23.91 utkarsh_lath None 0
MAXNUM3 Maximum Number None 376 14.05 ad-hoc chemthan easy ltime53 None 0
INTERVCH Digit Bounded Numbers None 6 14.63 cook101 deadwing97 dynamic-programming inclusion-exclusion None 0
CHEFPRMS Chef and Semi-Primes None 258 54.01 easy mgch number-theory precomputation sieve snckql19 taran_1407 None 0
BYTELE Bytelandian Telecom admin 12 68.42 admin None 0
DEVVOTE Devus and their voting system admin2 29 40.0 admin2 None 0
TABUS Traveling Plan tuananh93 115 8.61 binarysearch cook32 dynamic-prog easy-medium graph tuananh93 None 0
PHRASES Relevant Phrases of Annihilation admin 18 4.35 admin None 0
MLCHEF Merciless Chef adurysk 124 27.61 adurysk data-structure medium segment-trees sept13 None 0
CHEFNUMK Chef and Queries None 123 23.03 cook77 easy-medium mgch query None 0
KOL16K Chef and Points None 37 20.71 acm16kol dynamic-programming geometry mgch None 0
KOL16J Quentin Tarantino admin3 2125 31.46 acm16kol admin3 cakewalk sorting None 0
KOL16H Mr Wireless kol_adm 228 31.67 acm16kol binary easy kol_adm None 0
YAEXP Yet another expected value problem None 7 20.83 jtnydv25 None 0
KOL16C Zeroes VII kol_adm 39 21.96 acm16kol binary-search hard kol_adm None 0
KOL16A Playing World War II kol_adm 53 22.77 acm16kol dynamic-programming kol_adm medium None 0
KOL16F Precious Stones kol_adm 150 9.55 acm16kol easy kol_adm string None 0
KOL16E Divide Me Please kol_adm 59 26.39 acm16kol kol_adm medium modular-arith number-theory None 0
TREERGB Paint the Tree witua 22 50.94 cook49 dp easy-medium trees witua None 0
LEPAPER Little Elephant and Sheet witua 7 20.59 cook28 dp hard matrix-expo witua None 0
LUCKG Lucky Game witalij_hq 35 32.82 adhoc bfs july14 medium witalij_hq None 0
RUSHHOUR Rush Hour gamabunta 11 32.79 feb11 gamabunta hard None 0
QUERY Observing the Tree xcwgf666 93 19.86 feb13 hard heavy-light persistence xcwgf666 None 0
STREDUC Reduce string anhdq 26 19.91 anhdq hard oct10 None 0
TAEDITOR Simple Editor tuananh93 164 14.75 tuananh93 None 0
CHANOQ Chef and odd queries None 94 26.71 feb18 markysha medium-hard persistence segment-tree sqrt-decomp None 0
INFDIV Make it Zero None 13 28.57 jtnydv25 None 0
BINTOUR Binary Tournament kostya_by 196 35.07 combinatorics easy kostya_by march14 None 0
SFUNC SuperFunction kostya_by 33 6.38 basic-maths easy-medium exponentiation inclusn-exclusn kostya_by ltime07 subarr None 0
MOVIEWKN Movie Weekend None 4226 48.17 cakewalk cook69 kostya_by None 0
ANUCBC Cards, bags and coins anudeep2011 93 15.56 anudeep2011 april14 dynamic-prog medium None 0
COOKOFF2 The Grand Cook Off pieguy 17 38.18 cook09 medium pieguy None 0
REARRAN Rearrangement gennady.korotkevich 9 12.59 bruteforce cook27 gennady.korotkevich meet-in-middle simple-math None 0
CHEFHCK2 End Of The World 2 anton_lunyov 30 20.08 anton_lunyov binary-search cook31 easy None 0
STRCH Friend or Girlfriend None 1077 47.91 april19 combinatorics jnarutoj simple None 0
XRQRS Xor Queries gomelfk 261 21.68 data-structure gomelfk jan15 medium-hard trie None 0
DIVMAC Dividing Machine None 474 19.59 kaizer medium segment-tree sept16 None 0
PRMDIV Prime divisors None 282 16.98 easy fekete fekete likecs ltime62 sieve None 0
SUBTREE Festivals tuananh93 18 33.67 lca march13 medium tree tuananh93 None 0
ALETHIO Lyra and the Alethiometer pragrame 358 23.75 heaps cook35 ad-hoc gauss-elim pragrame easy kmp offline-query hashing 3.5 1
LONGSEQ Chef and digits of a number None 4643 30.79 ad-hoc cakewalk chandubaba sept16 string None 0
ALOST Akhil Recovers The Lost Array None 64 34.91 amitpandeykgp ltime36 number-theory None 0
CHEFVOTE Chefs and Voting for best friend admin2 527 19.99 ad-hoc admin2 digraph graph realization snck151a None 0
WPROB The Warehouse xcwgf666 152 44.68 ltime21 xcwgf666 None 0
RIGHTTRI Right Triangle None 716 40.11 binary-search cook71 easy kingofnumbers None 0
GRIDCONN Yet another substring problem xcwgf666 19 20.0 biginteger bruteforce handling ltime18 simple xcwgf666 None 0
PRPALIN Prime Palindromes admin 5652 27.71 admin None 0
SMPAIR The Smallest Pair xcwgf666 10441 32.35 ltime13 sorting xcwgf666 None 0
COVERING Covering Sets kostya_by 66 53.99 cook52 divide-and-conq inclusn-exclusn kostya_by medium-hard sets None 0
BITOBYT Byte to Bit None 1383 22.08 easy oct18 shivam_g1470 None 0
SUPVIL Superheroes and villains None 322 27.03 basic-prog cakewalk ltime43 pkacprzak None 0
CHN11 Animesh has a war with tribal leader Malvika admin2 13 7.14 acm15chn admin2 combinatorics sorting None 0
TRIQUERY Triangular Queries rustinpiece 111 34.58 feb13 line-sweep medium rustinpiece None 0
PALL01 The Block Game karthikv1392 12536 56.66 None 0
VISITALL How to Operate a Robot witua 19 27.14 cook56 medium simulation witua None 0
SMARKET Stable market None 173 26.56 april17 medium pkacprzak segment-tree None 0
MAXSEGM Maximum Unique Segment None 638 28.32 easy grumpy_gordon ltime49 two-pointers None 0
PANSTACK Stacking Pancakes kaushik_iska 270 30.06 april12 easy kaushik_iska None 0
VOGOZO Vogon Zoo yogesh01 159 56.55 yogesh01 None 0
AVDWAST Avoid Wasting laycurse 8 8.89 cook30 greedy laycurse medium-hard None 0
SGARDEN Garden Game berezin 329 17.35 berezin easy july14 lcm None 0
XRMTRX Xor Matrix alex_2oo8 13 11.3 ad-hoc alex_2oo8 feb15 None 0
PALINGAM Palindromic Game admin2 198 23.12 ad-hoc admin2 aug17 easy game None 0
DEM2019A Surgical Strikes None 19 7.67 vishal_nnd0 None 0
CHCHCL Chef and Chocolate None 2737 43.47 antoniuk1 aug16 cakewalk None 0
INVITES Party Planning pragrame 44 28.18 cook35 medium pragrame tree-dp None 0
CIELGAME Ciel and Genjiko laycurse 11 36.11 cook20 laycurse medium None 0
CHEFMATH Chef and math None 322 31.55 dynamic-programming easy-medium may16 meet-in-middle omelyanenko recursion None 0
DIRECTI Reversing directions pieguy 1819 51.72 ad-hoc cakewalk cook29 pieguy None 0
STETSKLX Chef and Path None 29 6.86 antoniuk1 aug15 binary-search divide-and-conq medium-hard minimum-query sliding-range unrooted-trees None 0
CO92MATR Chef Restores a Matrix None 666 34.2 cook92 easy implementation kefaa None 0
BSTOPS BST Operations None 601 15.14 anukul None 0
MAXOR Good Pairs None 253 26.47 arpa ltime50 None 0
A7 A Christmas Pizza Puzzle admin 10 23.08 admin None 0
PROSUM Little Chef and Numbers viv001 1881 23.49 cakewalk march14 simple-math viv001 None 0
CHEFHOME A Home for Chef rosyish 266 38.48 may12 medium rosyish None 0
SEALINE Sereja and Line None 225 48.53 cook64 easy implementation sereja simulation None 0
ANUDTC Divide the Cake anudeep2011 4360 50.47 anudeep2011 cakewalk cook46 None 0
SMPAINT Art in Digital Age tuananh93 30 65.67 challenge dec13 dp greedy heuristic tuananh93 None 0
PREDICT Predictopus mkagenius 434 42.83 easy june13 mkagenius probability None 0
TARPRACT Target Practice pieguy 26 18.13 cook14 medium pieguy None 0
NONOVSEG Non Overlapping Segments admin2 24 22.97 acm17kgp admin2 dynamic-programming kgp17rol medium None 0
CHEFBOOK Chefbook shiplu 43 30.54 june15 lp maxflow shiplu None 0
LMATRIX3 Make It Zero 3 ACRush 8 26.19 ACRush None 0
FGTREE Forgotten Tree 9 None 6 11.11 june19 junechallenge lg5293 None 0
FLY Fly-overs shettynamit 19 25.0 functions graphs june12 medium shettynamit None 0
CYLINDER Cylinder anton_lunyov 31 36.23 anton_lunyov april13 maths medium None 0
RG_01 Maximal Score Path rahulakaneo 125 13.78 easy june11 rahulakaneo re_01 None 0
FAULT Fault Tolerance pieguy 30 53.64 april13 bitwise challenge gauss-elim pieguy None 0
ORDERAAM Chef and the Orders satej 16 13.97 cook42 greedy hard min-cost-flow satej None 0
MINSTR Minimize the string admin2 186 38.79 acm17chn admin2 chn17rol simple None 0
CHEFTOWN ChefTown Parade Rubanenko 224 27.87 Rubanenko data-structure deque sep12 None 0
PRINDRAG Princess and Dragons None 11 4.87 aug18 dynamic-programming likecs medium-hard step_by_step step_by_step None 0
SALARY The Minimum Number Of Moves ballon_ziq 6849 40.9 ad-hoc ballon_ziq cakewalk jan13 None 0
LFEB14B Sereja and ASum sereja 453 38.11 cakewalk implementation ltime09 maths sereja None 0
LFEB14A Sereja and Two Arrays sereja 31 21.15 fenwick inversions ltime09 maths medium sereja None 0
NOKIA Connecting Soldiers flying_ant 1527 48.08 cook23 flying_ant recursion simple None 0
PERSHFTS Cyclic shifts in permutation None 42 11.52 eartemov fenwick-tree inversions maths medium oct15 permutation None 0
SUBGCD Subarray GCD darkshadows 3132 44.18 cakewalk cook50 darkshadows maths None 0
ROUTES Safe Routes xcwgf666 25 25.2 dynamic-bcc ltime03 xcwgf666 None 0
TR2 Robot Game akhilravidas 29 33.13 akhilravidas june10 medium None 0
FGFS Bon Appetit viv001 815 22.7 easy greedy jan14 sorting viv001 None 0
EXPCOMM Exponentiation Commutativity anton_lunyov 12 32.5 anton_lunyov cook08 hard None 0
QSET Queries on the String darkshadows 388 26.78 None 0
PREFIXOR Prefix XOR None 34 20.0 gomelfk None 0
DIFTRIP Different Trips tuananh93 104 31.8 dec12 hard suffix-array tuananh93 None 0
COOLING Cooling Pies pieguy 7148 42.25 cook03 easy pieguy None 0
ADASHOP Ada Bishop None 12 25.0 ad-hoc alei cases cook99 counting easy-medium taran_1407 None 0
DFSGRID Chef and The Recursive Algorithm rustinpiece 12 12.4 ad-hoc cook37 implementation medium-hard rustinpiece None 0
AMROOK Rook Placement satej 16 29.85 combinatorics cook34 medium satej None 0
GENETICS Genetics spooky 37 21.09 aug10 hard spooky None 0
NWAYS Number of Ways amitpandeykgp 276 53.96 amitpandeykgp combinatorics easy ltime24 None 0
RECTCNT Rectangles Counting anhdq 140 14.56 anhdq april11 easy None 0
LASTDIG Last Digit Sum pieguy 698 16.95 cook14 easy pieguy None 0
DORADM01 Lights Out MichaelD 12 47.37 MichaelD hard may10 None 0
EVILAND Chef in Evil Land None 22 27.1 deva2802 None 0
RECOVER Recover Square None 16 26.87 bciobanu constructive medium-hard observations pruning snckel19 taran_1407 None 0
PSHTTR Pishty and tree None 169 24.52 datastructure fekete july17 medium sorting None 0
PUPPYCT Puppy and cats None 106 10.7 ltime26 pavel1996 None 0
PPTEST Polo the Penguin and the Test witua 1253 43.73 cook39 dp easy witua None 0
JOHNY Uncle Johny kostya_by 15533 55.04 cakewalk kostya_by nov13 None 0
ANDOOR A New Door witalij_hq 42 22.46 geometry jan13 medium precision witalij_hq None 0
PUPPYGM Puppy and game None 1655 53.1 game-theory ltime26 pavel1996 None 0
SAUNA Sauna Cred None 15 10.11 balajiganapath None 0
NX The Best Tower admin 12 19.35 admin None 0
NUMBERS Lucy and the Number Game xcwgf666 490 27.69 cakewalk ltime06 sorting xcwgf666 None 0
FLOORSMV Moving between Floors flying_ant 16 36.51 cook18 flying_ant medium None 0
TWOTREES A tale of two trees None 21 14.61 balajiganapath None 0
LVGFT Lovers Gift None 28 21.58 dsu medium nov17 ziein None 0
RDF Random decreasing function Rubanenko 170 34.03 Rubanenko dynamic-prog easy expectation march13 None 0
NOTATRI Not a Triangle admin 2647 24.88 admin None 0
N1 Treasure Hunting admin 126 26.36 admin None 0
N2 Heroes of Magical Might admin 9 58.82 admin None 0
N3 K-important Strings admin 17 22.97 admin None 0
N4 Tri-Hexagonal Puzzle admin 135 32.66 admin None 0
N5 Traffic jam admin 25 12.96 admin None 0
CHEFZOT Chef and Subarray berezin 3048 47.0 ad-hoc berezin cakewalk june14 None 0
DISCHAR Distinct Characters Subsequence darkshadows 1941 57.1 cakewalk darkshadows nov14 None 0
SIGNWAVE Sign Wave chandubaba 158 21.82 chandubaba march15 None 0
CHRECT Chef and Walking on the rectangle furko 652 43.13 ad-hoc cakewalk furko july13 None 0
FRMQ Chef and Array antoniuk1 340 11.23 antoniuk1 None 0
CAPPLE Chef and Apple Trees ma5termind 1589 56.35 ma5termind None 0
USF Useful Number None 209 30.7 easy ltime66 nots0fast sieve None 0
SORTING Sorting xcwgf666 192 18.11 ltime03 persistence segment-tree xcwgf666 None 0
ARRANGE2 Rearranging Digits syco 8 6.47 hard july10 syco None 0
QHOUSE Bear and House Queries None 288 20.6 binary-search easy errichto ltime45 None 0
SPAMCLAS Spam Classification Using Neural Net admin2 1253 16.37 acm17kgp admin2 easy kgp17rol None 0
LEBOMBS Little Elephant and Bombs witua 4795 35.11 adhoc aug12 cakewalk witua None 0
WSCAGAIN Deja Vu xcwgf666 27 29.36 bfs easy ltime18 xcwgf666 None 0
MOSTDIST Most Distant Points kostya_by 208 40.03 cook52 easy geometry heap kostya_by manhattan None 0
SIMGRAPH Similar Graphs pieguy 35 82.26 april12 challenge pieguy None 0
SEAPERM Sereja and Permutation sereja 64 72.2 sereja None 0
HBEAR The Hungry Bear admin 15 22.99 admin dec10 hard None 0
INSOMA2 Exploding Search admin 136 27.34 admin None 0
SEQUAT2 Sebi and the equation 2 None 11 10.34 bitwise cook76 iscsi medium-hard sieve None 0
CNR Combinatorial Numbers vineetpaliwal 30 13.87 arithmetic big-integer binary-numbers combinations ltime05 permutations vineetpaliwal None 0
TOURNAM Tennis Tournament gennady.korotkevich 135 30.69 cook27 dynamic-prog gennady.korotkevich probability None 0
FIRE Brush Fire friggstad 134 25.21 easy friggstad sept10 None 0
STFM Chef and Strange Formula antoniuk1 397 13.27 antoniuk1 easy feb15 None 0
FACTORY Optimizing Production and Sales friggstad 16 51.22 aug10 challenge friggstad None 0
START01 Number Mirror admin 30061 68.96 None 0
DIVGOLD How to Minimize a String witua 494 20.3 cakewalk cook56 sorting witua None 0
STEPAVG Stepping Average gennady.korotkevich 20 59.38 challenge gennady.korotkevich nov11 None 0
CIELTOMY Ciel and Tomya laycurse 303 31.69 backtracking cook24 laycurse simple None 0
MMATCH The Cursed Room admin 18 32.22 admin None 0
PUPPYPLM Puppy and Palindromes None 35 36.88 constructive cook67 hashing palindromes pavel1996 None 0
QSTRING Stringology is Magic xiaodao 1 0.19 xiaodao None 0
CO92TREE Chef Chooses a Subset None 43 26.35 bruteforce cook92 dfs kefaa medium tree None 0
CLPERM Chef and A Large Permutation ma5termind 340 17.71 jan15 ma5termind maths medium None 0
RACELANE Painting Racing Lanes friggstad 195 36.19 friggstad None 0
QTREE Queries on tree again! tuananh93 55 31.17 hard heavy-light may13 segment-tree simple-math tuananh93 None 0
CLIQUED Bear and Clique Distances None 364 22.87 april17 easy errichto graph-theory None 0
TWONIM Dual Nim None 543 52.28 cook68 easy game-theory nim parity-obsv xellos0 None 0
CHEFYODA Chef and Yoda None 83 25.36 omelyanenko None 0
GOODGAL Good galaxy pavel1996 12 35.29 pavel1996 None 0
COLARR Colored Array berezin 214 26.83 berezin None 0
CHN01 Malvika conducts her own ACM-ICPC contest series admin2 72 9.94 acm15chn admin2 binary-search None 0
CHN02 Animesh decides to settle down admin2 20 31.53 acm15chn admin2 computational geometry None 0
CHN03 Animesh practices some programming contests admin2 61 13.5 acm15chn admin2 dynamic-programming None 0
CHN04 Malvika gets bored along with her Cats admin2 6 2.54 acm15chn admin2 dynamic-programming sqrt-decomp None 0
PERMDIG Permute Digits anton_lunyov 18 16.36 anton_lunyov cook15 medium None 0
CHN06 King Animesh decides to have a voyage to the sun admin2 12 33.33 acm15chn admin2 graph-traversal perfect-match None 0
CHN07 Malvika and Animesh play Red-Blue cards Game admin2 29 22.06 acm15chn admin2 game-theory None 0
FCTRL2 Small factorials admin 35649 18.56 admin 1.0 0
LIKECS03 Infinite OR Game None 353 43.41 bitwise cook86 easy-medium greedy likecs likecs None 0
SQRTRI A Triangle and Two Squares admin2 114 41.48 admin2 None 0
ABX03 Four Friends None 29 7.8 abx_2109 binary-search dfs inclusion-exclusion lca ltime55 medium-hard None 0
LIKECS04 Numbers Game None 51 34.08 cook86 dynamic-programming invariants likecs likecs medium None 0
CIELQUIZ Ciel and Quiz Game laycurse 30 20.23 cook17 laycurse medium None 0
STRSUB Count Substrings darkshadows 304 11.99 darkshadows march15 None 0
PLAYFIT Fit to Play vamsi_kavala 2686 30.68 april12 easy vamsi_kavala None 0
MGICMENU Magical Menu None 6 25.0 cook108 divide-and-conq imanik inclusion-exclusion mobius prefix-sum taran_1407 None 0
SPCANDY Splitting Candies kuruma 5504 28.23 aug13 cakewalk kuruma simple-math None 0
CHEFAFD Chef and Finding Direction None 14 17.53 dec16 hamiltonian hopcroft-karp lexman matching maxflow None 0
TALCA Lowest Common Ancestor tuananh93 608 27.7 lca ltime14 medium-hard trees tuananh93 None 0
XORAGN Xor Again None 1629 31.99 deadcode4 easy may18 xor None 0
FRCPRT Forced Particles None 248 21.26 easy-medium fekete fekete likecs ltime62 observations None 0
KCHIPS Angry Chef - Crispy Chips flying_ant 42 19.12 cook13 flying_ant medium None 0
TASTRMAT String Matching tuananh93 48 26.69 fft hard ltime19 tuananh93 None 0
ARITHPR Longest Arithmetic Progressions anton_lunyov 19 19.13 anton_lunyov cook11 medium None 0
DOMSOL Domino Solitaire yogesh01 275 56.8 yogesh01 None 0
LENTMO Lent Money None 285 23.31 june19 junechallenge ucntstopme None 0
HIGHWAYC Highway Crossing None 101 18.67 april18 easy epsilon geometry math vidyut_1 None 0
MAXDIFFW Maximum Difference Walk mugurelionut 13 43.48 mugurelionut None 0
WORLDCUP Strategy for the World Cup devuy11 363 28.18 combinatorics cook55 devuy11 dynamic-prog maths None 0
NOTINCOM Nothing in Common None 2458 21.37 basic-prog cakewalk ltime44 sets xcwgf666 None 0
TEAMMATE Finding Teammate None 127 21.79 combinatorics easy-medium kingofnumbers snckql19 taran_1407 None 0
EXAMCOPY Exam Copy None 17 14.29 wittyceaser None 0
ROTPTS Rotate Point None 53 33.49 chemthan chemthan cook89 likecs matrix-mul medium sqrt-decomp None 0
ORDERS Ordering the Soldiers admin 811 9.54 admin None 0
CHEFBRO Younger Brother vamsi_kavala 177 34.55 easy sep11 vamsi_kavala None 0
PWNCHESS Pawn Chess None 13 9.71 alei cook93 game-theory games medium None 0
CATSRATS Cats and Rats None 34 13.99 cook104 easy erfaniaa None 0
GOODNUMB Good Numbers admin2 131 8.05 admin2 None 0
PERMUTE Just Some Permutations 3 rustinpiece 56 36.05 ad-hoc june13 medium-hard rustinpiece None 0
MTRWY Matrix antoniuk1 181 16.37 antoniuk1 None 0
PERMUT2 Ambiguous Permutations admin 14440 39.44 admin None 0
THREEFR Three Friends admin2 1982 52.15 admin2 cakewalk equations ltime65 math taran_1407 None 0
DIVNODIV Divisors number divisibility anton_lunyov 11 25.25 anton_lunyov cook06 hard None 0
GIIKLUB Gii and His Club thesitzr 39 28.29 binary-search ltime73 meet-in-middle taran_1407 thesitzr None 0
DESTROY Chef and Destruction None 605 25.0 cook66 easy greedy ma5termind None 0
EMBED Embedding nssprogrammer 11 88.17 nssprogrammer None 0
SHMIRZ Shops in Mirzapur None 11 15.08 convex-hull decomposition medium-hard pelt2019 squareroot xodiac xodiac None 0
RRMATRIX Strange Matrix Rubanenko 574 32.58 Rubanenko basic-maths cook38 simple None 0
BUY1GET1 Buy1-Get1 khadarbasha 4088 42.81 ad-hoc cakewalk feb13 khadarbasha None 0
MACGUN Machine Gun anhdq 29 13.73 anhdq aug12 graph matching medium None 0
PARCOS Cosine Partition Function laycurse 11 53.49 laycurse march12 medium None 0
FSQRT Finding Square Roots karthikv1392 21012 62.67 None 0
RRMTRX2 Matrix Again Rubanenko 549 32.22 Rubanenko cook53 easy simple-math None 0
AMIFIB Am I a Fibonacci Number vineetpaliwal 683 21.02 heaps easy binarysearch fibonacci cook40 kd-tree offline hashing vineetpaliwal heavy-light 4.0 0
CHMAGIC Chef and Magic Numbers furko 17 22.89 ad-hoc furko ltime04 medium None 0
WEASELTX Weasel does Xor on Tree None 56 18.76 bciobanu binomial lucas-theorem medium-hard sept17 None 0
FAVNUM Favourite Numbers xcwgf666 59 25.14 aho-corasick dp july12 medium xcwgf666 None 0
COPRIME3 Coprime Triples xcwgf666 432 23.72 gcd iep ltime13 mobius_function sieve xcwgf666 None 0
ALPHABET Studying Alphabet None 3868 39.32 cakewalk implementation ltime39 strings xcwgf666 None 0
METEORAK Meteor Rubanenko 67 42.09 Rubanenko dynamic-prog jan14 medium None 0
GRTRIP Greedy Trip Rubanenko 27 12.82 Rubanenko dfs graphs ltime01 None 0
POSTERS Tidying Posters friggstad 24 38.82 friggstad hard june10 None 0
ANUWTA Walk on the Axis anudeep2011 3702 41.42 ad-hoc anudeep2011 cakewalk cook51 None 0
KSUBSUM Makx Sum flying_ant 374 17.43 cook18 easy flying_ant None 0
WEAKMID Weak in the Middle None 55 13.39 array easy-med kingofnumbers kingofnumbers looping simulation stack None 0
SPIN Spinning Wheels gennady.korotkevich 14 75.0 challenge dec11 gennady.korotkevich None 0
EQUATIO Equation Solver gennady.korotkevich 65 34.35 cook19 gennady.korotkevich medium None 0
MARBLES Marbles admin 4995 28.9 admin None 0
FENCE Fencing None 417 25.41 april19 ashishgup data-structure hash-map map simple None 0
CLTREE Paths None 10 34.38 centroid-decomp cole2019 medium-hard meooow None 0
MIXCOLOR Mix the Colors None 911 48.79 ad-hoc easy greedy march18 shivangi_gupta sorting None 0
ACMKANPA Problem With Strings admin 7 0.55 admin None 0
ACMKANPC Traffic Jam admin 10 35.48 admin None 0
ACMKANPB Bonus admin 44 15.05 admin None 0
ACMKANPE Algebra Express admin 8 8.26 admin None 0
ACMKANPD A New Number System admin 288 26.56 admin None 0
MPROD Minimum Product piyushkumar 59 12.26 easy greedy ltime11 piyushkumar None 0
RRCODE Code Rubanenko 1536 23.36 Rubanenko cakewalk cook38 None 0
ANUSAR Substrings and Repetitions anudeep2011 88 25.41 anudeep2011 cook46 medium-hard None 0
MAKEART Art None 664 50.43 cakewalk kevinsogo loops snckpa16 None 0
DAILY Daily Train gennady.korotkevich 1447 54.4 cook19 easy gennady.korotkevich None 0
STEM Word Stem None 318 36.98 cook63 easy hashmaps shangjingbo strings None 0
ARIGEOM Arigeom Beats ankul_iiita 16 9.23 ankul_iiita dec12 medium simple-math None 0
CRYPCUR Crypto Trading None 31 30.74 wittyceaser None 0
RUNDIR Run Direction None 100 21.61 alei binary-search cook93 easy-medium greedy None 0
POSTAL The Postal Service nomind 19 15.27 medium nomind nov11 None 0
XORSUMS Bear and Xor of Sums None 47 22.92 cook81 errichto medium segment-tree None 0
BROKPHON Broken Telephone m0stik 1990 56.51 april15 m0stik None 0
CHFCH Chef Challenge None 94 13.92 greedy kingofnumbers ltime69 sorting None 0
SMVSEVIL Smart Chef vs Evil Chef pieguy 11 39.02 challenge feb12 pieguy None 0
LELUCKYN Little Elephant and Lucky Segment witua 14 4.75 binarysearch cook28 maths medium-hard witua None 0
ABREPEAT Bear and AB None 539 43.4 combinatorics cook81 errichto simple None 0
FRBSUM ForbiddenSum kostya_by 185 42.14 binarysearch jan14 kostya_by medium persistence segment-tree None 0
BLREDSET Black and Red vertices of Tree admin2 42 27.27 acm17chn admin2 chn17rol dynamic-programming medium tree-dp None 0
GNUM Game of Numbers darkshadows 126 27.26 darkshadows hard july14 maths maxflow None 0
PPXOR Polo the Penguin and the XOR witua 373 31.17 bitwise cook39 easy-medium witua xor None 0
GRID Sherlock and the Grid darkshadows 2078 36.04 cook50 darkshadows dp simple None 0
RANKLIST Let us play with rank list chandubaba 651 34.75 chandubaba feb15 greedy None 0
MINEAT Minion Chef and Bananas admin2 938 26.01 admin2 binary-search easy-medium march18 None 0
CHEFINV Chef and Swaps berezin 65 17.92 berezin fenwick inversions medium sept14 None 0
TRICKYDL The Tricky Deal None 735 60.76 cakewalk kingofnumbers ltime69 None 0
CHEFINS Chef and Numbers None 109 23.34 cook77 fft medium mgch None 0
CHSHIFU Chef Shifu and Celebration None 77 12.89 wittyceaser None 0
CHEFING Chef and Secret Ingredients None 513 55.24 adityad1998 data-structure feb19 simple string None 0
INCXOR Increasing Xor Sequence None 46 71.43 bitmasks cook80 digit-dp lg5293 medium-hard None 0
MAXCOMP Event Organizer khadarbasha 496 39.17 khadarbasha oct12 simple None 0
CHEFPRAD Chef and Pairs None 66 31.72 mgch None 0
LUCKY8 Little Elephant and Product witua 65 23.28 ad-hoc easy june12 witua None 0
LUCKY9 Lucky Balance witua 34 41.75 binomial maths medium nov12 witua None 0
LUCKY4 Lucky Array witua 22 33.33 april12 medium witua None 0
LUCKY5 Lucky Long witua 3524 50.0 easy feb12 witua None 0
LUCKY2 Lucky Number witua 143 10.19 easy march12 witua None 0
LUCKY3 Lucky Sum witua 40 39.85 jan12 medium witua None 0
LUCKY1 Lucky Count witua 182 39.35 easy feb12 witua None 0
SUMTRIAN Sums in a Triangle admin 15558 38.37 admin None 0
CHEFSUBA Chef and Sub Array berezin 279 11.59 berezin long-contest may17 None 0
TRIPS Children Trips xcwgf666 104 25.79 xcwgf666 None 0
CHIEFETT Pleasing Chief gamabunta 93 23.38 cook12 gamabunta medium None 0
CLTNIS Tennis None 35 16.1 cole2019 easy-medium geometry meooow ternary-search None 0
DELISH Dessert Wizard viv001 1210 29.81 dynamic-prog june13 simple viv001 None 0
PALPROB Palindromeness xcwgf666 76 21.01 dfs ltime23 medium-hard palindrome xcwgf666 None 0
RRTREE2 Tree Again Rubanenko 44 44.26 Rubanenko cook48 dfs knapsack medium-hard None 0
PRGIFT Chef and Gift dpraveen 2916 23.88 ad-hoc aug14 cakewalk dpraveen None 0
EQIDLIS Distribute idlis Equally flying_ant 588 28.63 cook10 easy flying_ant None 0
STRAB How to Write a Message witua 82 29.3 cook56 dynamic-prog easy-medium recursion witua None 0
COOKOFF Choosing Cook Off Problems pieguy 27 17.86 cook04 medium pieguy None 0
CHEFCRUN Chef and Circle Run berezin 118 16.92 aug16 berezin easy prefix-sum None 0
FNCS Chef and Churu devuy11 293 15.96 devuy11 None 0
WORDNINJ WordNinjas anton_lunyov 11 82.61 anton_lunyov challenge dec12 None 0
PRPALN Let us construct palindrome None 645 23.51 ad-hoc greedy nov14 None 0
REIGN Reign kostya_by 241 37.05 dec13 easy kostya_by None 0
YASPP Yet another shortest path problem None 22 27.06 jtnydv25 None 0
STTT Standard Tree Task None 13 23.19 allllekssssa bitmasking combinatorics cook-off cook97 dynamic-programming taran_1407 None 0
DIVPAIR Divisible Pairs rustinpiece 154 19.07 may12 medium rustinpiece None 0
SNACKUP SnackUp None 449 61.51 ad-hoc alei constructive cook83 easy None 0
HULL Magic Hull shangjingbo 12 23.08 june12 medium polygons shangjingbo vectors None 0
ANUMFS The Malaysian Flight Search anudeep2011 11 62.5 anudeep2011 None 0
WGHTNUM Weight of Numbers None 406 21.05 april18 easy fast-expo vkrules1104 None 0
RAINBOWB Chef and Rainbow Array - 2 berezin 297 28.72 berezin combinations math sept14 simple None 0
URBANDEV Urban Development None 59 18.54 cenadar line-sweep medium nov16 segment-tree None 0
LUCKPAL Lucky Palin ankul_iiita 139 18.37 ankul_iiita easy oct11 None 0
E5 Buggy algorithm admin 19 25.97 admin None 0
E4 Quadratic Equations admin 21 14.19 admin None 0
CARDS777 Yet Another Card Game None 207 68.18 cook80 expected-value lg5293 medium None 0
E1 The White Knight admin 690 23.24 admin None 0
E3 Johny the farmer admin 20 15.82 admin None 0
E2 Lights Off admin 18 4.18 admin None 0
CHSPARR Chef and Super Array None 59 16.29 algebra antoniuk1 medium series snckpa16 None 0
DOMNOCUT Colored Domino Tilings and Cuts anton_lunyov 16 31.82 anton_lunyov hard nov11 None 0
ODDBIN Odd Binomial Coefficients subra 17 20.2 dec10 medium subra None 0
EX Lights Off, Revisited! admin 12 25.86 admin None 0
DEVPERF Devu and Perfume admin2 217 25.22 ad-hoc admin2 cakewalk jan16 None 0
POST Post Office pieguy 10 1.25 hard oct10 pieguy None 0
MAXGAME Game Count khadarbasha 18 32.86 aug12 combinatorics khadarbasha recurrence None 0
FACTORIZ Factorisation sereja 112 44.17 challenge factorization pollard-rho sept14 sereja None 0
MISSP Chef and Dolls karthikv1392 5929 31.68 None 0
COMPLEXT Complex Spanning Tree gamabunta 10 58.82 gamabunta None 0
MANCBST Chef Counts Semi-BSTs None 32 58.88 acm17chn chn17rol fft med-hard satyaki3794 None 0
EASYPROB A Very Easy Problem! admin 7259 52.33 admin None 0
CKISSHUG Kisses & Hugs kaushik_iska 1222 25.17 exponentiation kaushik_iska maths matrix-expo sep12 None 0
ADAPWNS Ada Pawns None 62 23.99 alei game-theory grundy observations sprague-grundy None 0
SNCKYEAR Chef and SnackDown None 2373 61.9 ad-hoc cakewalk mgch snck1b19 snckyear taran_1407 None 0
HOTEL Hotel Bytelandia pieguy 2450 52.07 cook14 easy pieguy None 0
MEANMEDI Mean Mean Medians gamabunta 17 25.86 cook12 gamabunta medium None 0
TETRA Sphere in a tetrahedron admin 252 62.47 admin None 0
RECIPE Cutting Recipes pieguy 13025 45.07 cook04 easy pieguy None 0
RRBIGNUM Big Number Rubanenko 59 17.99 Rubanenko cook38 medium segment-trees None 0
CLRL Chef goes Left Right Left None 331 43.65 abizerl123 cakewalk nov17 None 0
MANRECT Manhattan Rectangle None 247 29.88 equations feb19 manhattan medium observations sanroylozan None 0
MKSQR Make A Square anshuman_singh 253 34.82 anshuman_singh None 0
MEDIAN Little Elephant and Median witua 43 18.66 may12 medium witua None 0
TADELIVE Delivery Man tuananh93 1418 20.85 None 0
CHFANS Chef and Two Fans None 185 18.23 abeyaar None 0
CAREFUL Careful Calculation gennady.korotkevich 26 35.65 cook19 gennady.korotkevich medium None 0
NUMGAME Yet Another Number Game syco 7914 47.63 syco None 0
TIDRICE Popular Rice Recipe flying_ant 1629 51.97 cook10 easy flying_ant None 0
TFOSS Fossil in the Ice admin 31 11.83 admin None 0
XM XOR Magic None 26 13.53 dynamic-programming ltime72 precomputation prefix-sum taran_1407 vivek_1998299 None 0
GLBEGA Glass Bead Game yogesh01 43 42.36 yogesh01 None 0
TLG The Lead Game admin 26493 21.35 admin None 0
CANDLE Birthday Candles pieguy 3751 24.19 cook03 easy pieguy None 0
CHGIFT1 Chef and Gift furko 497 16.23 dp easy furko ltime04 None 0
MATCH Expected Maximum Matching shangjingbo 61 59.48 hard june12 matching probability shangjingbo None 0
MYS00T Mystery Tree None 44 25.0 centroid-decomp cook105 cookoff data-structure easy-medium interactive mrkerim None 0
SPCLN Cleaning the Space None 17 45.83 nssprogrammer None 0
GRAPHCNT Counting on a directed graph ztxz16 161 28.08 may15 medium-hard ztxz16 None 0
BINIM Binary Nim None 486 40.27 alei combinatorial cook93 game game-theory greedy nim None 0
LEPERMUT Little Elephant and Permutations witua 7545 62.38 ad-hoc cakewalk cook28 witua None 0
TMRATING Best Buggy Ratings flying_ant 40 44.7 cook21 flying_ant medium None 0
SUMAGCD Sum and GCD None 401 23.7 june19 junechallenge roman_derkach None 0
MAANDI Maxim and Dividers sereja 1058 45.27 divisors number-theory oct13 sereja simple None 0
NDUNGEON Nikhils Dungeon admin 140 22.17 admin None 0
TRANSFIG Transfiguring Trees pragrame 19 20.0 cook35 medium pragrame tree None 0
COOLNUM Cool Numbers iscsi 19 11.67 hard iscsi june12 prime-factor None 0
FILLMTR Fill The Matrix admin2 326 27.97 admin2 bipartite easy-medium sept17 None 0
STRINGRA Strings and Graphs admin3 40 21.67 ad-hoc admin3 aug17 easy-medium greedy sorting None 0
FATCHEF Remy paints the fence rosyish 338 24.37 rosyish None 0
KTHCON The potato problem None 67 21.92 convex-hull cook68 geometry medium two-pointers xellos0 None 0
IMPACT Some Impact None 19 7.25 kalpitk None 0
REACTION Chain Reaction None 1395 35.34 cook106 cookoff solaimanope None 0
RIVERLND Riverland forestryks 0 0.0 forestryks None 0
DRGRAC Drag Racing None 0 0.0 vijju123 None 0
PALIN The Next Palindrome admin 3598 12.48 admin None 0
SETDIFF Set Difference amitpandeykgp 556 25.19 amitpandeykgp easy may15 None 0
MOVES Robot Movings anhdq 182 22.58 anhdq dec11 easy None 0
SPSHORT Special Shortest Walk devuy11 62 22.76 cook55 devuy11 dijkstra graph medium-hard paths-in-graph shortest-path None 0
GROUPING Grouping Chefs anton_lunyov 24 30.51 anton_lunyov cook08 medium None 0
CHEFPNT Chef and Painting berezin 57 48.87 berezin None 0
ICPC16D Good Sets admin3 535 27.5 admin3 None 0
ICPC16G Robolympic Batons admin3 38 26.6 admin3 None 0
ICPC16F Chef and Bipartite Graphs admin3 537 32.41 admin3 None 0
STORO Rotation Puzzle admin 11 10.78 admin None 0
CPLAY Penalty Shoot-out None 284 28.19 dec17 shivam496 None 0
CHEFWORD Chef and Words berezin 121 24.29 berezin None 0
SUMCUBE Sum of Cubes None 25 30.53 hard maths r_64 sept17 sqrt-decomp None 0
CHEFFIB Chef, Leonardo And Queries None 22 13.33 dec17 kefaa None 0
TEST Life, the Universe, and Everything admin 102079 31.93 admin None 0
CTHREE Chef and Tuples None 546 46.57 chtree cook91 easy math mgch number-theory None 0
CHSEQ22 Chef and Favourite Sequence furko 68 45.85 furko None 0
TABGAME Table Game None 129 13.91 easy game-theory melfice observations sept18 string None 0
LEEXAMS Little Elephant and Exams witua 192 37.69 brute-force easy probability sept13 witua None 0
EATTWICE Eat Twice None 877 51.22 cook-off cook107 kingofnumbers None 0
PAIRING Pairing Chefs friggstad 1243 59.9 cook05 easy friggstad None 0
SEARRAYS Sereja and Arrays sereja 277 51.96 dp easy implementation ltime09 sereja None 0
KOL1508 Antichains None 22 20.61 acm15kol combinatorics piyushkumar sperners theorem None 0
TASUMOBC Sum Of Binomial Coefficent tuananh93 68 23.45 combinatorics digit-dp hard ltime19 tuananh93 None 0
R2D2 The Last Droid None 10 21.67 disjoint-set farhod_farmon ltime71 medium-hard sorting taran_1407 tree-based None 0
TESTERS Vacation Rubanenko 47 13.56 Rubanenko feb13 hard tree None 0
KOL1503 The Parenthesis Tree None 36 22.01 acm15kol ancestors balanced common devuy11 lowest parentheses None 0
KOL1505 Jalebi Bai and Decks of Sweets admin2 171 53.01 acm15kol admin2 processing string None 0
KOL1504 The making of a cake None 178 20.43 acm15kol devuy11 sorting None 0
SBSWAP Subtree swapping None 20 22.37 link-cut-tree ltime43 medium-hard pkacprzak sqrt-decomp treap tree None 0
PRIMES2 A Prime Conjecture pieguy 665 27.55 cook09 easy pieguy None 0
DANYANUM Danya and Numbers None 24 45.68 barenuz cook95 med-hard sqrt-decomp None 0
TUZTRN Puppy and Triangles None 6 5.34 cook67 geometry implementation maths pavel1996 None 0
PPNUM Polo the Penguin and the Numbers witua 633 23.5 ad-hoc cook39 easy witua None 0
ORDTEAMS Ordering teams admin2 1597 29.98 acmind17 admin2 simple sorting None 0
PRPOTION Magical Girl and Colored Liquid Potions dpraveen 814 44.51 dpraveen None 0
MOREFB Another Fibonacci amitpandeykgp 65 21.1 amitpandeykgp fft june15 medium None 0
J4 Effective Sets admin 6 2.99 admin None 0
J5 Magic Strings admin 13 24.32 admin None 0
J6 Help the judge admin 8 40.0 admin None 0
J7 The Best Box admin 5324 61.97 admin None 0
J1 SudokuX admin 18 13.61 admin None 0
J2 The LCS Problem Revisited admin 150 23.79 admin None 0
J3 The N Queens Puzzle Revisited admin 39 34.74 admin None 0
ANUBGC Book Game with Chef anudeep2011 259 35.69 anudeep2011 cook46 dp easy-medium None 0
CIRCLE Minion Circle piyushkumar 27 17.11 dp easy-medium ltime11 piyushkumar prefix-sums None 0
NPIN Needles and Pins vinayak garg 8 52.0 geometry hard july13 line-clipping line-sweep vinayak garg None 0
GUESS Guessing Game darkshadows 533 36.5 ad-hoc combinatorics darkshadows june14 simple None 0
SHORT Short gennady.korotkevich 32 23.88 gennady.korotkevich hard sep11 None 0
REVERSE Chef and Reversing berezin 720 28.61 aug14 berezin easy graph shortest-path None 0
NOLOGIC Lack of Logic anton_lunyov 1642 36.4 ad-hoc anton_lunyov cakewalk cook31 None 0
MIME2 Internet Media Types pieguy 1264 36.56 cook09 easy pieguy None 0
WESTAND Chef and Direction None 4 7.94 omelyanenko None 0
RESIST Resistance flying_ant 683 49.75 cook21 easy flying_ant None 0
CLEANUP Cleaning Up friggstad 15618 44.63 cook02 easy friggstad None 0
XORNUBER Chef and the XORed Number None 1674 35.84 basic-maths bitwise-operatn cook61 rustinpiece simple None 0
CHEFSEG Chef and Segment Game berezin 305 36.41 ad-hoc berezin nov14 simple None 0
BBSYSTEM Box and Ball System laycurse 42 25.94 feb12 laycurse medium None 0
ANUTHM Tojo hates probabilities anudeep2011 1419 55.13 anudeep2011 cook54 easy maths None 0
COT5 Count on a Treap xiaodao 101 45.03 xiaodao None 0
SNAKEEAT Snake Eating admin3 374 16.5 admin3 binary-search easy snckql17 sorting vivek1_007 None 0
SERSUM Series Sum None 18 27.59 chemthan convolution fft may18 power-series None 0
CHNGSUM Chang and Perfect Quadruples None 128 27.92 cook84 medium prateekg603 None 0
SUBARRAY Parenthesis with Maximum Sum Subarray devuy11 212 22.56 cook55 data-structure devuy11 dynamic-prog medium None 0
CHEFADV Chef and Adventures None 591 27.1 divisbility hindi math mgch modulo sept18 simple None 0
CHAORNOT To challenge or not ACRush 74 52.53 ACRush challenge june13 None 0
LECARDS Little Elephant and Cards witua 205 33.52 feb13 simple simple-math witua None 0
BWCELL Black And White Cells None 370 46.52 game-theory ltime30 ma5termind None 0
COTA Chef of The Ancient shiplu 16 42.86 bitmasking cook43 graph hard shiplu shortest-path None 0
LUKYDRIV Lucky Driving kaushik_iska 99 16.97 aug12 dp kaushik_iska number-theory None 0
LUCKFOUR Lucky Four xcwgf666 23670 63.36 ltime21 xcwgf666 None 0
HMAPPY2 Appy and Contest None 1444 12.48 cakewalk feb19 gcd hmrockstar maths None 0
CIELLAND Ciel and a new island laycurse 10 30.26 cook20 laycurse medium None 0
HPARITY Coloring in Hypercube satej 12 59.09 aug11 hard satej None 0
CROWNS Icing Crowns friggstad 17 45.0 cook07 friggstad medium None 0
SUPERPLN Super-plane anton_lunyov 127 15.2 anton_lunyov cook11 easy None 0
BTAR Beautiful Array None 810 25.6 chemthan chemthan cook89 easy greedy likecs None 0
QMARKS Lucy and Question Marks xcwgf666 44 26.88 aho-corasick ltime06 xcwgf666 None 0
ANCESTOR Ancestors in Two Trees None 139 29.46 kingofnumbers None 0
WTBTR Where to Build the Roads None 244 25.7 deepanshuvaid7 None 0
UNFRIEND Rebuilding Byteland gamabunta 21 32.43 colouring cook25 gamabunta gauss-elim graph None 0
BOGOSORT Bogosort spooky 118 22.73 easy feb11 spooky None 0
CK87MEAD Chef and Math Test None 24 34.67 centroid-decomp cook87 fenwick-tree line-sweep medium-hard mhammad1 saeed_sryhini None 0
PRB01 Primality Test karthikv1392 12109 50.19 None 0
CRAWA The Leaking Robot witalij_hq 515 29.52 ad-hoc aug14 easy witalij_hq None 0
SUBQUERY Substring Query xcwgf666 55 16.27 ltime13 suffix_automata trie xcwgf666 None 0
PAIRSUM Sum of pairs admin 370 16.01 admin None 0
SLIS Second LIS None 67 41.3 cook63 medium segment-tree shangjingbo None 0
EQUATION A Simple Equation anshuman_singh 1669 26.14 anshuman_singh None 0
SUMPOWER Summary Power None 540 30.03 easy isaf27 isaf27 likecs ltime61 prefix-sum sliding-window None 0
HUNGALGO Chef Learning Hungarian Algorithm None 672 52.43 cakewalk cook105 cookoff kingofnumbers matrix None 0
BIGPIZA Socializing Game around Pizza flying_ant 156 24.31 cook10 easy flying_ant None 0
AMMEAT2 Andrew and the Meatballs again witua 1063 41.65 ad-hoc cook33 simple witua None 0
CLONEME Cloning None 100 14.48 june17 medium-hard polynomial segment-tree sidhant007 None 0
SUMSLOPE Summing Slopes syco 19 4.73 may10 medium syco None 0
EMITL emitL None 515 31.63 ad-hoc cakewalk implementation ltime29 pavel1996 string None 0
SNAKPROC Snake Procession admin3 2815 40.7 admin3 cakewalk implementation snckql17 string None 0
MIKE3 Mike and Stamps kostya_by 163 25.28 easy kostya_by march14 search None 0
MIKE2 Mike and Task Packages kostya_by 278 20.3 greedy kostya_by ltime07 simple None 0
MIKE1 Mike and Matrices kostya_by 477 42.32 cakewalk implementation kostya_by ltime07 None 0
RRDAG Present for Andrii Rubanenko 149 21.38 Rubanenko cook48 graph medium None 0
PERMSUFF Permutation Shuffle witua 530 24.39 cook49 scanline simple sorting witua None 0
GERALD2 Black and White Tree gerald 36 13.2 data-structure gerald hard heavy-light nov13 None 0
GERALD3 Chef and Substrings gerald 26 8.84 gerald None 0
LEVY Levy Conjecture kaushik_iska 619 31.11 april13 kaushik_iska sieve simple None 0
MEXDIV Mex division None 159 35.13 gomelfk None 0
BINSHFFL Binary Shuffle None 353 27.44 binary-numbers easy floyd-warshall june18 likecs sanroylozan sanroylozan None 0
SOCIAL Dinner Party Socializing pieguy 21 31.65 cook04 medium pieguy None 0
ARCHPLG The Archipelago admin 7 35.24 admin None 0
WITMATH Witua and Math Rubanenko 310 28.8 Rubanenko may13 miller-rabin primenumbers simple None 0
ANUGCD Maximum number, GCD condition anudeep2011 153 26.39 anudeep2011 march14 medium prime-factor segment-tree None 0
CNPIIM Counting Matrices kuruma 241 25.9 april14 easy-medium kuruma maths None 0
FASTFOOD Fast Food None 662 39.93 greedy kingofnumbers ltime71 partial-sums simple taran_1407 None 0
TREEDIAM Product of Diameters None 35 25.98 lca ltime39 medium tree union-find xcwgf666 None 0
FOMBRO Zombinatorial devuy11 78 44.21 cook55 devuy11 dynamic-prog mathematics None 0
CHMOD Chef and Segments furko 436 13.8 aug13 easy exponentiation furko simple-math None 0
WINDOW Chef attic window anton_lunyov 12 14.71 anton_lunyov hard jan11 None 0
LONCYC Lonely Cycles None 31 20.77 aug18 cycle dfs likecs medium sanroylozan sanroylozan None 0
PDSNUM PDS Number anhdq 18 15.83 anhdq april12 medium None 0
SEABUB Sereja and Bubble Sort sereja 25 26.5 dp expectation medium sept14 sereja None 0
LEMOVIE Little Elephant and Movies witua 125 34.93 witua None 0
NICARRAY Niceness of the Arrays admin2 71 21.65 admin2 backtracking combinatorics easy ltime65 modular-arith permutation taran_1407 None 0
CHRL1 Chef and Shop furko 637 37.56 cakewalk combinatorics furko ltime08 None 0
CHRL2 Chef and String furko 2969 28.45 chrl3 dp easy furko ltime08 None 0
CHRL3 Chef and Numbers furko 267 23.48 dp easy furko ltime08 None 0
CHRL4 Chef and Way furko 1346 6.25 dp easy-medium furko ltime08 None 0
ARMYFGT Fighting Armies None 109 15.96 bipin2 None 0
RBTREE Chef and Red Black Tree ma5termind 405 39.13 ma5termind None 0
SEGM01 Bear and Segment 01 None 2367 45.07 cakewalk errichto linear-search ltime47 None 0
CSUMD My Fair Coins kaushik_iska 520 30.73 easy july12 kaushik_iska matrix-expo recurrence None 0
THREEDIF Three Different Numbers anton_lunyov 2031 32.75 anton_lunyov combinatorics jan13 modulo simple None 0
POKER Poker admin 644 31.68 admin None 0
CLOSEST Closest Points gamabunta 30 29.75 challenge gamabunta geometry june12 kd-tree None 0
CUTPLANT Cutting Plants None 139 24.51 april18 data-structure deque medium segment-tree sqrt-decomp step_by_step None 0
GREG Greg and Grid None 163 57.14 kalpitk None 0
CHFAR Chef and Sequence None 1508 43.22 math mgch simple snck1b19 taran_1407 None 0
BINARY Binary Movements None 21 6.96 iamabjain None 0
TWOCOINS Two Coins admin3 56 17.09 admin3 dynamic-programming easy-medium july17 tree-dp None 0
FCBARCA Barcelona Gameplay Tactics kuruma 488 33.85 simple april13 simple-math dp kuruma None 0
KOL1510 The Revenge of Jalebi Bai admin2 59 38.19 acm15kol admin2 backtracking shortest supersequence None 0
UNIQUE Chef and Uniqueness shiplu 51 27.71 cook43 hard lcp segment-tree shiplu string suffix-array None 0
COLLIDE Collision in Space flying_ant 223 26.18 cook18 easy flying_ant None 0
NINENINE Jake and His Halloween challenge None 7 27.45 combinatorics inclusn-exclusn medium-hard panik panik pelt2019 None 0
TREF Tree Flow None 12 18.68 allllekssssa dynamic-programming greedy ltime70 medium-hard observations taran_1407 None 0
SQUIRREL Squirrel and chestnut anhdq 131 21.89 anhdq june10 medium None 0
HMAPPY Appy and Balloons None 346 29.49 binary-search easy hmrockstar oct18 None 0
CAPIMOVE Capital Movement None 617 30.78 cenadar data-structure heap jan17 sets simple sorting tree None 0
DISHOWN Dish Owner viv001 1304 20.78 disjoint-set easy july14 viv001 None 0
MSTICK Matchsticks mkagenius 410 19.95 may13 mkagenius segment-tree simple simple-math None 0
HAPPY Happy Days spooky 17 7.47 july10 medium spooky None 0
TAVISUAL The Ball And Cups tuananh93 3712 46.69 ad-hoc cakewalk cook32 tuananh93 None 0
ANUDTQ Dynamic Trees and Queries anudeep2011 69 28.46 anudeep2011 None 0
MONTRANS Money Transformation anton_lunyov 815 30.16 anton_lunyov cook08 easy None 0
CIELRCPT Ciel and Receipt laycurse 19784 58.48 cakewalk cook24 greedy laycurse None 0
PRETNUM Yet Another Cute Girl ballon_ziq 289 15.28 ballon_ziq easy nov13 prime-factor sieve None 0
DINING Dining None 32 17.83 graphs min-cost-flow snck151a xcwgf666 None 0
QRYLAND Ivan Pesic and His World Tour thesitzr 14 18.09 heavy-light-decomposition ltime73 mo-algorithm randomized segment-tree taran_1407 thesitzr None 0
HAUNTED Haunted Maze pieguy 17 29.67 hard pieguy sep11 None 0
LEMAGIC Little Elephant and Magic witua 128 32.2 cook28 dp dynamic-prog easy witua None 0
EXPXOR Expected Xor None 174 59.38 anachor cook106 cookoff None 0
NW1 Days in Month None 2146 31.23 abx_2109 ad-hoc cakewalk ltime55 None 0
LMATRIX2 Make It Zero 2 ballon_ziq 29 68.89 ballon_ziq challenge feb14 None 0
TALETRI A Tale of Two Right Angled Triangles admin2 90 22.71 admin2 easy gwr17rol None 0
ERROR Chef and Feedback viv001 7728 43.35 cakewalk jan14 programming viv001 None 0
RIPPLE Ripple-Carry Adder friggstad 49 23.19 cook01 friggstad medium None 0
LMA1 Lucy and the Math Analysis xcwgf666 43 30.25 ltime06 math xcwgf666 None 0
CNTWAYS The Uncountable Ways ballon_ziq 204 26.21 ballon_ziq combinatorics dec12 easy-medium None 0
TOMJERRY Tom And Jerry gamabunta 23 72.22 challenge gamabunta march12 None 0
TMBOX The Turing Music Box admin 9 24.56 admin None 0
DRAGNXOR Open the Dragon Scroll flying_ant 3880 61.16 cook13 easy flying_ant None 0
DDISH Delicious Dishes Rubanenko 129 7.87 Rubanenko bruteforce nov12 simple simple-math None 0
MATCUT Mathison and the cubic tree None 13 10.19 alexvaleanu hard hashing ltime51 None 0
VILTRIBE Villages and Tribes admin2 1775 41.32 admin2 cakewalk nov17 None 0
PREPARE Preparing Dishes friggstad 57 19.5 cook05 friggstad medium None 0
LAMQUGAM Lame Queen Game anton_lunyov 8 26.19 anton_lunyov cook15 hard None 0
DANOW Danny Wants To Know None 1394 37.14 aashu_k None 0
CHEFPASS Codechef Password Recovery gamabunta 42 51.65 cook25 euler-tour gamabunta graph None 0
CIELDIST Minimum Distance laycurse 1744 37.29 cakewalk cook30 laycurse simple-math None 0
HOB2 Hotel Balifornia 2 anton_lunyov 58 25.08 anton_lunyov cook31 easy greedy None 0
SJ1 Playing with Numbers None 639 55.62 april19 easy gcd number-theory sj1397 None 0
FACTSUM Super Factor Sum admin 28 6.46 admin None 0
MAXCOUNT Count of Maximum yellow_agony 5831 36.28 easy feb12 yellow_agony None 0
PRDIVSUM Sum Divides Product anton_lunyov 10 4.82 anton_lunyov hard may11 None 0
DIREL Distant Relatives vinayak garg 23 10.17 ad-hoc cook45 easy graph vinayak garg None 0
TREECNT2 Counting on a Tree xcwgf666 80 22.34 march15 xcwgf666 None 0
SEATSR Sereja and two strings sereja 156 14.52 sereja None 0
ALEXROSE Roses for Alexey None 34 23.43 rubanalexey None 0
PPLUCKY Polo the Penguin and the Lucky String witua 88 12.84 bit cook39 fenwick medium segment-tree witua None 0
GOODSET A Good Set admin2 2565 45.62 admin2 cakewalk june17 None 0
TWINRO Twin Robots yogesh01 82 53.36 yogesh01 None 0
CLONES Attack of the Clones spooky 36 45.56 hard june11 spooky None 0
XORSUB XOR with Subset darkshadows 1735 30.56 darkshadows None 0
NUMGAME2 Number Game Revisited nssprogrammer 5311 49.38 april11 easy nssprogrammer None 0
CHESSGM Chess Pushing Game anhdq 29 41.38 anhdq jan11 medium None 0
HELPLIRA Helping Lira kuruma 1390 34.62 cakewalk geometry kuruma oct13 None 0
XORPATH Xortest Path None 41 54.22 kevinsogo None 0
MEX Max Mex None 505 40.21 greedy hruday968 oct17 simple sorting None 0
RAFFLE Chef Raffle None 7 38.1 calculus hard lagrange pieguy probability snckfl19 None 0
COOMILK Bear and Milky Cookies None 2451 34.08 cakewalk errichto ltime45 None 0
WALL Wall kostya_by 58 7.94 easy-medium geometry kostya_by ltime15 number-theory None 0
LWS Longest Weird Subsequence vamsi_kavala 152 37.06 easy march12 vamsi_kavala None 0
DEFOREST Chef and Deforestation None 20 15.6 acm17chn chn17rol data-structure med-hard usaxena95 None 0
ANUARM The Army anudeep2011 2032 42.04 anudeep2011 cook51 simple None 0
WALK Walk berezin 3565 41.35 berezin cakewalk march14 programming None 0
MMADNESS Monitoring Madness admin 41 8.93 admin None 0
BLOCKING Block Game shangjingbo 111 35.64 aug12 graph matching shangjingbo None 0
KALKI Kali and Devtas nssprogrammer 25 68.42 nssprogrammer None 0
EVENPOLY Even Coefficients friggstad 11 63.16 dec10 friggstad hard None 0
CUTSQRS Cutting off Squares admin 18 21.21 admin None 0
MAXCIR Max Circumference cgy4ever 20 14.21 cgy4ever hard oct12 None 0
A1 Paying up admin 2135 49.54 admin None 0
A3 The Guessing Game admin 139 8.12 admin explanation game guessing guessinggame None 0
POINTS The Way to a Friends House Is Never Too Long admin 2042 26.37 admin None 0
A5 Packing the Boxes admin 10 6.37 admin None 0
A4 The Rise and Fall of Power admin 178 7.53 admin None 0
HLDOTS Heavy-light Decompositions xcwgf666 41 23.32 ltime21 xcwgf666 None 0
A6 Some More Homework admin 99 5.27 admin None 0
A8 The Bytelandian Union admin 11 6.51 admin None 0
TREEMX Tree MEX None 0 0.0 vijju123 None 0
SUBSEG2 Chef and his study plans None 107 24.71 activity-selection binary-search greedy jump-pointer medium snckpa16 xcwgf666 None 0
GUESSPRM Guess the Prime! None 224 19.22 bohdan chinese-rem easy-medium factorization july19 long-challenge math number-theory None 0
SPLIT Splitting Giant Subs friggstad 18 66.67 challenge friggstad jan11 None 0
AX Place the mines! admin 20 27.66 admin None 0
SNGRAPH Snakes and Graph admin2 146 32.59 admin2 dsu graph-theory medium snckpb17 None 0
BUILDING Head office building anhdq 27 23.02 anhdq cook01 medium None 0
HPIRATES Heap Pirates None 63 30.08 bciobanu constructive easy-medium observations snckpe19 taran_1407 None 0
TWOARR The Most Amazing Dish None 36 18.1 cook103 deva2802 medium-hard persistence None 0
NTHCIR Rohith and Circles adurysk 54 14.48 adurysk geometry july15 maths medium-hard recurrence None 0
SNAKY Snake Snaky anton_lunyov 129 14.79 anton_lunyov cook08 easy None 0
BGQRS Big Queries None 105 10.47 antoniuk1 chasethered None 0
SEQCOUNT How many sequences xcwgf666 34 8.42 dp easy-medium ltime10 xcwgf666 None 0
SANSKAR Alok-nath and His Sanskars jay_adm 562 12.93 jay_adm None 0
PERFCONT A Balanced Contest admin2 2485 35.25 admin2 cakewalk oct17 None 0
DIVPRO Dividing Products viv001 31 28.89 dp jan13 medium viv001 None 0
CNVX4HUL Points and Convex Hulls None 8 17.57 cook-off cook104 erfaniaa medium-hard None 0
SPELL The Spelling Problem xcwgf666 32 62.35 xcwgf666 None 0
DEVCLASS Devu and his Class admin2 206 19.58 admin2 march15 None 0
PPTREE Polo the Penguin and the Tree witua 180 33.47 bitwise cook39 dp medium-hard trie witua xor None 0
SNDISCUS Snakes and their Discussions admin2 90 38.82 admin2 basic-math greedy proof snckpb17 None 0
FORESTGA Forest Gathering None 727 13.47 binary-search cenadar easy may16 None 0
KTHMAX Kth Max Subarray None 105 16.1 dec16 kevind None 0
CPP Chef Protection Plan vinayak garg 8 30.39 grammar-parsing hard may13 regex string-parsing vinayak garg None 0
JX Help the DJ admin 59 45.77 admin None 0
MANYLIST Many Lists None 53 14.91 hard ltime28 segment-tree sets xcwgf666 None 0
XETF Euler Totient Function Extended xcwgf666 27 6.47 easy-medium inclusn-exclusn ltime23 xcwgf666 None 0
UPDTREE Updating Edges on Trees darkshadows 48 30.0 cook50 darkshadows dfs dp lca medium-hard None 0
TREASURE Treasure Hunt None 17 38.55 ashishgup gauss-elim march19 medium taran_1407 None 0
FLIPCOIN Flipping Coins syco 2782 16.88 syco None 0
PRUNING Pruning Trees friggstad 23 60.0 friggstad hard may11 None 0
TR1 Rendezvous akhilravidas 128 14.18 akhilravidas easy may10 None 0
MAXTAX Maximize the Tax None 16 12.35 dynamic-programming feb19 medium-hard scc stelkasouridis topologicalsort None 0
DREAM Chef's Dream kamranmaharov 190 36.34 july12 kamranmaharov simple sorting None 0
TREEPROD Product on Tree None 27 15.85 amitpandeykgp dfs dynamic-programming ltime30 tree None 0
SWINDOW Sherlock and Smallest Window None 30 25.75 cook75 darkshadows medium segment-tree two-pointers None 0
LUCKYSTR Little Elephant and Strings witua 2701 55.08 cook22 easy witua None 0
SWARM Swarm of Polygons spooky 15 5.54 aug10 medium spooky None 0
ATTIC Attic Crossing pragrame 2918 53.09 ad-hoc cakewalk cook35 pragrame None 0
COUNTARI Arithmetic Progressions rustinpiece 303 24.93 fft hard maths nov12 rustinpiece None 0
CHEFKO Chef and K Segments None 170 40.26 easy mgch segments snck1b19 sorting taran_1407 None 0
KOL1509 Save The Trees None 134 14.08 acm15kol convex-hull devuy11 None 0
CARLOS Inversion sorting xellos0 117 22.19 april15 xellos0 None 0
TRICHEF Chef and Triangles None 84 7.34 easy-medium geometry gwr17rol usaxena95 None 0
QUEHEA Queen of Hearts None 25 24.03 alei cook73 data-structure medium-hard qeahea segment-tree None 0
BROCLK Broken Clock None 171 27.23 chemthan feb18 math matrix-expo modular-arith trigonometry None 0
NDLVOTE Vote for the Noodle Soup flying_ant 253 27.0 cook13 easy flying_ant None 0
BLACKCOM Black Nodes in Subgraphs admin3 82 38.05 admin3 None 0
SEAD Sereja and D sereja 155 32.47 binary-search ltime09 medium segment-tree sereja sparse-tables None 0
PARITREE Parity tree admin2 144 22.45 admin2 bicolor graph march16 medium union-find xor None 0
LEBOBBLE Little Elephant and Bubble Sort witua 68 37.99 july12 medium probability segment-tree witua None 0
DIGITSEP Digits Cannot Separate None 98 18.26 ad-hoc dynamic-programming gcd jan17 medium wittyceaser None 0
CHEFGORO Chef Goro None 15 53.13 alei bitmask cook93 medium-hard precomputation topology None 0
COOKFOOD Cooking dishes utkarsh_lath 106 32.68 ltime02 simple-math utkarsh_lath None 0
SANDWICH Long Sandwich None 87 25.74 kingofnumbers None 0
CORRCHK Statements Checking xcwgf666 74 30.67 cakewalk ltime10 numeral-systems xcwgf666 None 0
SDSQUARE Square Digit Squares div_adm 1029 26.83 div_adm nov13 simple None 0
ADADET A Study in Bake Street None 42 17.41 alei convex cook83 geometry hull medium stack None 0
DECSTR Decreasing String anshuman_singh 4263 31.68 anshuman_singh None 0
SHTARR Shooting on the array None 47 16.06 altruist_ medium-hard oct17 segment-tree None 0
COOKGAME Cooking Game None 199 16.39 combinatorics cook79 easy-medium kingofnumbers None 0
CHEFLAKE Searching for the Recipe None 15 21.15 cook94 dynamic-programming hloya_ygrt prefix-sum None 0
MXM Maximize It None 63 7.24 binary-search easy ltime66 nots0fast None 0
AEHASH A-E Hash Function fushar 129 20.42 easy fushar july11 None 0
DEG3MAXT Three-Degree-Bounded Maximum Cost Subtree mugurelionut 11 61.29 dp hard mugurelionut oct13 None 0
TOURBUS Byteland Tours pieguy 13 54.05 challenge dynamic-prog greedy heuristic jan14 pieguy search None 0
PAIRCLST Two Closest None 209 25.95 dijkstra floyd-warshall ltime34 medium xcwgf666 None 0
FX Crystals admin 29 61.4 admin None 0
BIPARTRE Bipartite Graph from Trees admin3 35 28.87 admin3 cook84 max maxflow medium vivek1_007 None 0
COLLECT Collecting Magical Berries xcwgf666 95 32.65 combinatorics june13 medium xcwgf666 None 0
ANTEATER Ants and Anteaters None 334 51.25 cook-off cook107 erfaniaa None 0
CEQUAL Chef and Distinct Numbers None 1110 26.83 l_returns None 0
SEAGRP Sereja and Graph sereja 163 24.21 jan14 matching medium sereja None 0
FN Fibonacci Number aekd_adm 82 22.05 aekd_adm maths medium-hard number-theory oct13 None 0
MDN Median None 15 24.59 nots0fast None 0
WEICOM Weird Competition None 59 12.43 chemthan constructive ltime53 medium-hard None 0
CHSGMNTS Chef and Segments None 112 23.17 antoniuk1 dynamic-programming july16 medium None 0
CHNGSEQ Chang and Beautiful Sequences None 19 43.48 bit combinatorics cook84 hard math prateekg603 None 0
WEIGHT Weight of Numbers anshuman_singh 179 37.27 anshuman_singh None 0
MXSUBARR Maximum Disjoint Subarrays admin2 83 23.62 admin2 None 0
CHEFSQUA Chef and Square berezin 238 29.47 berezin None 0
RNDGRID Bear and Random Grid None 12 9.79 april17 errichto None 0
LEBALONS Little Elephant and Balloons witua 144 18.95 dynamic-prog easy-medium may14 witua None 0
CUCUMBER Cucumber Boy and Cucumber Girl laycurse 29 61.76 gauss-elim hard jan13 laycurse None 0
ADITREE Adi and the Tree None 30 39.47 andrei1998 heavy-light lazypropagation medium observations segment-tree snckel19 taran_1407 None 0
SEAARC Sereja and Arcs sereja 89 27.26 sereja None 0
SHIRO Save The Princess vamsi_kavala 295 37.68 aug13 dp dynamic-prog easy simple-math vamsi_kavala None 0
F1 Golf course admin 125 8.2 admin None 0
F2 Bytelandian Robots admin 17 36.0 admin None 0
F3 Curry Stained Napkin admin 17 14.18 admin None 0
F4 Se7en admin 21 4.81 admin None 0
F5 Magic sequence admin 18 14.93 admin None 0
F6 Divide and conquer admin 23 35.05 admin None 0
CHEFGIRL Chef and Girls berezin 72 48.6 berezin dec15 directed dynamic-programming graphs medium None 0
ARRGAME2 Yet Another Nice Girl ballon_ziq 142 18.75 ballon_ziq easy oct13 probability sorting None 0
SEATR2 Sereja and Tree 2 None 116 27.6 cook64 dynamic-programming maths medium sereja tree None 0
CARRAY Chef and Line None 543 34.42 cook91 greedy mgch simple sorting None 0
CIRCUITS Randomly Testing Circuits friggstad 126 33.13 easy friggstad nov10 None 0
CSEQ Count Sequences darkshadows 352 18.75 april15 darkshadows None 0
CHEFA Chef and easy problem furko 2902 42.51 cakewalk furko ltime16 sorting None 0
CHEFC Chef and medium problem furko 52 15.96 furko hard ltime16 substring treaps None 0
CHEFB Chef and easy problem 2 furko 403 20.21 furko ltime16 maths simple None 0
CHEFD Chef and medium problem 2 furko 392 28.76 bit furko ltime16 medium sets None 0
SEGPROD Product on the segment by modulo None 99 15.82 altruist_ medium-hard nov17 None 0
CNTSOLS The Number Of Solutions ballon_ziq 150 22.41 dynamic-prog exponentiation aug13 simple-math ballon_ziq easy dp None 0
ANUTDP The Dirty Path anudeep2011 90 18.9 anudeep2011 bfs binary-search cook51 dfs easy-medium sorting None 0
CIELWALK Ciel and Random Walk laycurse 8 21.62 cook17 hard laycurse None 0
GQR Queries with GCD None 62 11.16 dynamic-programming gcd ltime58 medium mgch None 0
TAACUTE Counting The Acute Triangles tuananh93 33 21.19 cook36 easy-medium geometry sorting tuananh93 None 0
LFIVES Lucky Fives kostya_by 91 25.0 cook57 dynamic-prog fenwick kostya_by medium None 0
DEVSTR Devu and binary String admin2 323 18.81 admin2 easy may15 None 0
LEFEED Andrew and the Birthday witua 51 38.5 cook33 medium probability witua None 0
LOWSUM Lowest Sum vineetpaliwal 120 8.95 binarysearch cook40 easy priority sorting vineetpaliwal None 0
ORACLCS Oracle Devu and Longest Common Subsequence admin2 335 57.5 admin2 dec15 lcs simple None 0
XOR Xor it xcwgf666 67 9.71 march12 medium xcwgf666 None 0
PALIPALI Palindrome Palindrome anton_lunyov 24 13.93 anton_lunyov cook08 medium None 0
CNOTE Chef and Notebooks ma5termind 6760 37.55 ma5termind march15 None 0
SINSUMQ Sines Sum Queries anton_lunyov 15 13.91 anton_lunyov cook11 hard None 0
CHEFLMN Delivery Problems None 13 28.0 cook94 dynamic-programming hloya_ygrt modular-arith None 0
TSHIRTS Little Elephant and T-Shirts darkshadows 907 44.65 aug14 darkshadows dp+bitmask dynamic-prog easy-medium None 0
BHD Before Having Donuts None 7 15.94 dolabmoon None 0
TOOLS Fetching Cooking Tools friggstad 88 44.95 cook02 friggstad medium None 0
MUFFINS2 Frosting Cupcakes pieguy 11 16.92 cook09 hard pieguy None 0
MUFFINS3 Packaging Cupcakes pieguy 23950 51.76 pieguy cook29 simple-math cakewalk 4.0 0
DBFB Dibs on Fibs None 356 34.48 anuj_2106 easy fibonacci-numbers may18 None 0
MARTARTS Martial Arts thocevar 21 40.3 bipartite hard matching nov12 thocevar None 0
SUBPRNJL Yet Again a Subarray Problem None 224 20.36 binary-search easy march19 partial-sums prnjl_rai segment-tree taran_1407 None 0
CHFPARTY Chef and Party None 1445 62.79 chefparty cook103 easy kingofnumbers sorting None 0
FORGETPW Forgot Password stzgd 342 20.34 ad-hoc june14 simple stzgd None 0
ANUUND Ups and Downs anudeep2011 2314 55.48 anudeep2011 cook46 easy None 0
BWKNIGHT The Black and White Knights syco 152 14.08 cook01 easy syco None 0
MAXSCRAB Maximum Scoring Position None 52 38.3 vishal_nnd0 None 0
TOTR Tourist Translations vinayak garg 4660 62.52 ad-hoc cakewalk march13 permutation vinayak garg None 0
ONOZ Digital clock None 896 60.02 cakewalk cook68 string-process xellos0 None 0
RRSERVER Servers Rubanenko 153 52.16 Rubanenko cook53 dp+bitmask medium None 0
MUFFINS Baking Cupcakes friggstad 36 21.58 cook02 friggstad hard None 0
CLKLZM Killing Zombies None 76 13.98 cole2018 easy heap meooow None 0
CHEFSTON Chef and Stones berezin 2590 43.98 berezin cakewalk jan15 None 0
INTEST Enormous Input Test admin 69915 44.31 admin None 0
MGCHGYM Misha and Gym None 30 10.53 bitset dynamic-programming medium-hard mgch oct15 treap None 0
CHNGOR Chang and Bitwise OR None 2219 43.99 cook84 easy prateekg603 None 0
MMAX Minimum and Maximum None 376 33.2 july19 long-challenge math mayank1601 mod simple None 0
COOK82C Hussain Set None 613 17.5 cook82 deadwing97 easy-medium queue None 0
LUMPYBUS Lumpy - The Bus Driver admin2 408 19.74 admin2 easy greedy ltime38 None 0
CHSQR Chef and squares None 269 53.3 basic-prog fiter nov16 simple None 0
GTHRONES A Game of Thrones yellow_agony 37 21.9 aug12 flow hard matching yellow_agony None 0
CAVE Mushroom Cave pieguy 12 45.95 challenge june11 pieguy None 0
RRJAM Jam Rubanenko 73 22.44 Rubanenko cook53 hard sqrt-decomp None 0
BYTEFOOD Food Shortage in Byteland admin 12 53.19 admin None 0
BLINE BLACK LINE None 19 46.3 vishal_nnd0 None 0
MANYLEFT Many Left pieguy 26 78.69 challenge nov12 optimization pieguy search None 0
MINESWPR Minesweeper pieguy 59 50.29 ad-hoc bfs challenge march13 pieguy None 0
KNICOV Knight Covering None 127 23.58 alei bitmasks cook83 dynamic-programming easy-medium None 0
DARTS DARTS501 iscsi 15 67.53 challenge expectation iscsi june14 None 0
RRSTONE Stone Rubanenko 2604 24.26 Rubanenko ad-hoc easy may14 None 0
BICO BiCo Gaming Grid vinayak garg 109 27.55 combinatorics cook45 greedy simple vinayak garg None 0
AMMAGIC Magic Board None 40 36.36 balajiganapath None 0
PLAYSTR Playing with Strings None 1519 51.29 basic-maths cook108 ezio_26 frequency taran_1407 None 0
ROWCOLOP Row and Column Operations anton_lunyov 2405 37.55 anton_lunyov cook31 simple simple-math None 0
ALIENCOW Chef and Alien Invasion None 7 14.52 usaxena95 None 0
LUCKYSWP Little Elephant and Swapping witua 27 34.07 cook22 medium witua None 0
CHHAPPY Chef and Happiness None 314 28.67 data-structure implementation mgch nov18 simple taran_1407 None 0
DIVGAME Game of Divisors kostya_by 315 31.77 cook44 easy-medium game-theory kostya_by None 0
SQUAGAME Squares Game spooky 16 19.79 march11 medium spooky None 0
TWSTR Remember the recipe kaushik_iska 415 38.59 easy kaushik_iska may12 None 0
RRJOKE Good Joke! Rubanenko 4572 63.33 None 0
AMBALLS Andrew and the Balls witua 68 46.89 cook33 dynamic-prog medium witua None 0
STONES Jewels and Stones yellow_agony 8522 42.35 easy may12 yellow_agony None 0
SIGFIB Team Sigma and Fibonacci devuy11 40 35.03 aug14 devuy11 hard mathematics None 0
KLPM Kira Loves Palindromes None 138 17.0 april19 bombshot dynamic-programming easy-medium None 0
CHEFPRES Chef Under Pressure kamranmaharov 78 22.15 kamranmaharov None 0
K3 Maze of Digits admin 26 47.62 admin None 0
K2 Palindromic Numbers admin 264 8.11 admin None 0
K1 Plant Location admin 152 23.38 admin None 0
HAMILG A game on a graph xellos0 53 23.48 game-theory graphs hard july15 matching xellos0 None 0
OETW OneTwo None 667 35.9 cook98 dolabmoon easy observations prefix-sum taran_1407 None 0
ABABAABA ABABAABA None 188 22.22 ad-hoc easy-medium ltime34 xcwgf666 None 0
ASP Almost Sorted Permutation None 642 25.89 ad-hoc cook63 shangjingbo simple None 0
CHEFSIGN Chef and Sign Sequences berezin 400 26.25 ad-hoc berezin cakewalk greedy july17 None 0
SERVERS Communicating Servers friggstad 11 30.77 friggstad hard sept10 None 0
LCOLLIS Collisions None 2402 30.58 basic-implement cakewalk ltime37 pavel1996 None 0
SPREAD Gravel anhdq 820 18.81 anhdq april11 bit easy None 0
LEXOPAL Faded Palindromes None 582 45.05 ad-hoc easy ma5termind sept16 string None 0
PTOSS Pizza Tossing yellow_agony 28 22.07 cook26 kmp medium-hard yellow_agony None 0
CHEFHACK End Of The World khadarbasha 250 23.93 dfs easy jan13 khadarbasha sieve None 0
BLOCKDRO Block Drop spooky 18 7.79 aug11 medium spooky None 0
CHITHH Chef and Science furko 35 14.24 binary-search furko ltime04 medium preprocessing None 0
MVCOIN Moving Coins gennady.korotkevich 245 39.38 cook16 easy gennady.korotkevich None 0
SUBARR Perfect Subarrays kostya_by 233 21.28 bit easy fenwick kostya_by ltime07 prefix-sum segment-tree None 0
CIELAB Ciel and A-B Problem laycurse 29921 33.39 cook17 easy laycurse None 0
EBAIT Election Bait None 31 43.71 bciobanu equality medium-hard number-theory snckel19 taran_1407 None 0
CIRKILL Circle of death kaushik_iska 141 29.61 easy geometry july13 kaushik_iska maths None 0
KX Park tour admin 12 36.96 admin None 0
KTTABLE Kitchen Timetable None 5041 53.15 array cakewalk loop snckql16 xcwgf666 None 0
TOURISTS Tourists in Mancunia None 253 16.7 easy eulerian graph jan17 satyaki3794 None 0
RECTLIT Lighting Rectangle admin2 54 26.09 admin2 bruteforce easy-medium geometry inclusn-exclusn snckel19 taran_1407 None 0
XDCOMP Xor Decomposition None 41 34.03 combinatorics feb19 medium observations stevens tree-dp None 0
NETWORK Wireless Network pieguy 20 30.0 july11 medium pieguy None 0
GRIDCOL Chef and The Colored Grid rustinpiece 16 8.55 combinatorics cook37 hard inclusn-exclusn rustinpiece None 0
TANDC Tracy and Charlie piyushkumar 22 23.14 easy-medium inverse-element ltime11 math piyushkumar None 0
CTEAMS Chef Teams thocevar 153 25.28 easy june11 thocevar None 0
MARCHA1 Paying up admin 10248 37.51 admin None 0
MARCHA3 The Guessing Game admin 60 21.43 admin None 0
MARCHA2 Johnny and the Beanstalk admin 2342 27.92 admin None 0
MARCHA4 The Rise and Fall of Power admin 322 6.98 admin None 0
MARCHA6 Some More Homework admin 49 25.38 admin None 0
SHUTTLE Free Shuttle Service yellow_agony 174 41.44 easy march12 yellow_agony None 0
PALINDR Lucy and Palindromes xcwgf666 81 21.37 combinatorics ltime06 treap xcwgf666 None 0
KINGCON Kingdom Unity jay_adm 641 24.69 april13 dfs easy graph jay_adm None 0
BUCKETS Choosing from Buckets None 318 49.73 arpa dynamic-programming ltime67 probability None 0
INTRPATH Intersecting Paths None 49 14.11 aman_robotics june19 junechallenge None 0
SHORTCIR Shortest Circuit Evaluation spooky 23 39.78 aug11 hard spooky None 0
MATPAN Mathison and pangrams None 2299 44.66 alexvaleanu cakewalk looping ltime51 None 0
COMM3 Three Way Communications friggstad 9629 49.09 cook07 easy friggstad None 0
AMMEAT Andrew and the Meatballs witua 2514 30.22 ad-hoc cakewalk cook33 sorting witua None 0
RESTEXP Restaurant Expansion fushar 17 24.0 fushar jan11 medium None 0
JADUGAR Chef and Same Old Recurrence None 36 28.17 april18 generating_functions hard math usaxena95 None 0
AUTHEN Authentication Failed gennady.korotkevich 40 26.55 cook19 gennady.korotkevich hard None 0
CIELKARA Ciel and Karaoke laycurse 7 30.77 cook30 laycurse math medium-hard None 0
PARSIN Sine Partition Function laycurse 56 48.82 hard laycurse oct11 None 0
SEAPAIR Sereja and Pairs None 54 25.55 cook64 easy-medium greedy implementation maths sereja sorting None 0
TERVEC Terrible vectors None 8 24.39 hadamard hard matrices paley-const pavel1996 sept15 sylvesters williamson None 0
STDDEV Obtain Desired Standard Deviation admin2 420 25.21 acmind17 ad-hoc admin2 simple None 0
MARCHAX Place the mines! admin 11 50.0 admin None 0
SEAVOTE Sereja and Votes sereja 2260 27.99 None 0
DIGJUMP Chef and Digit Jumps berezin 1657 19.6 berezin bfs dijkstra easy june14 None 0
CYCLRACE Cyclist Race None 138 31.44 cenadar convex-hull jan16 med None 0
TRSUBTR Trees and Subtrees vineetpaliwal 98 21.86 cook40 hashing kmp medium vineetpaliwal None 0
BESTSUM Best Sums admin 39 3.64 admin None 0
INTEG Chef and Integers furko 661 18.88 furko sept13 simple None 0
PHOTOS The Traveling Photographer friggstad 29 35.51 friggstad None 0
HBIRD Chef And Hungry Birds None 23 10.63 binary-search dynamic-programming easy ma5termind march16 None 0
TCP Travelling Chef Problem vinayak garg 29 14.18 cook45 integrals interpolation medium vinayak garg None 0
SEAVEC Sereja and Vectors sereja 131 72.67 sereja None 0
DIGITS Product of Digits pieguy 23 12.41 cook03 hard pieguy None 0
LCH15CD Candidate walk pavel1996 75 19.63 dp implementation ltime20 pavel1996 None 0
DONUTS Chain of Doughnuts None 396 20.59 easy greedy m0stik sept15 sorting None 0
WALKTREE Not So Random Walks None 91 38.89 usaxena95 None 0
CHFINTRO Chef and Interactive Contests None 1785 54.28 cakewalk dec18 mgch None 0
ALLINONE The Amazing All-In-One Cooking Machine - Challenge friggstad 11 59.09 challenge friggstad march11 None 0
CAOS2 CAO Stage-2 kaushik_iska 163 26.4 kaushik_iska sept13 simple None 0
CAOS1 CAO Stage-1 kaushik_iska 470 44.93 cakewalk kaushik_iska sept13 None 0
ALEXNUMB Magic Pairs ballon_ziq 4482 34.81 ballon_ziq None 0
MAGIC Two Magicians gennady.korotkevich 26 39.71 aug12 game gennady.korotkevich graph hard None 0
FLOOD Flood admin 12 40.0 admin april10 challenge None 0
PLZLYKME Please like me kaushik_iska 3776 28.83 jan14 kaushik_iska programming simple None 0
ROBOTG Safe Robot None 559 40.9 bruteforce cook80 easy lg5293 string None 0
SUBLD Subtract Leading Digit None 53 15.45 vijju123 None 0
CHECKERS Eastern Draughts pieguy 11 37.84 aug12 challenge graph pieguy None 0
BRACKETS Brackets kostya_by 3103 49.35 basics cakewalk cook52 kostya_by None 0
YNOUTPUT Forced Output gamabunta 171 33.07 ad-hoc cook25 gamabunta None 0
SPOON Spoon in Matrix yellow_agony 1741 43.04 easy march12 yellow_agony None 0
WPLAY Word Play kaushik_iska 64 27.12 easy feb13 game kaushik_iska None 0
CHEFFED Chef and Numbers None 1195 54.21 ad-hoc cook72 easy mgch None 0
JERRYTOM Tom and Jerry None 22 42.86 rajat1603 None 0
LIGHT Lights shangjingbo 70 30.62 binarysearch geometry line-sweep sep12 shangjingbo None 0
YVNUM Yalalovichik Numbers None 423 14.77 cook101 deadwing97 None 0
JABO Jam Board vinayak garg 107 16.7 disjoint-set medium nov12 vinayak garg None 0
CHODE Chef and Codes witalij_hq 188 30.3 cakewalk dec13 programming witalij_hq None 0
PSHTRG Pishty and Triangles None 341 21.83 fekete march18 medium mergesort segment-tree triangle None 0
CATCHSM Catch Spider-Chef None 13 17.57 kingofnumbers None 0
SHIFTPAL Shifted Palindrome None 137 19.04 easy hashing kingofnumbers kingofnumbers ltime60 string xellos0 None 0
TAUT Tautology admin 45 33.0 admin None 0
APPROX2 Approximately II xcwgf666 998 31.05 cakewalk ltime12 xcwgf666 None 0
TRUEDARE Truth and Dare admin2 1444 32.45 admin2 cakewalk cook100 data-structure sets taran_1407 None 0
MARRAYS Chef and Magic Arrays berezin 176 24.16 berezin dynamic-programming easy-medium oct17 None 0
MAXRECT Maximum Sub-rectangle in Matrix yellow_agony 46 36.0 challenge oct12 yellow_agony None 0
NICEQUAD Nice Quadrangles spooky 99 9.18 easy may10 spooky None 0
XRGRD Xor Grid None 15 28.57 alex_2oo8 bitwise-operatn cook78 easy-medium fractals maths None 0
ENCMSG Encoding Message None 1942 47.45 cook96 implementation kingofnumbers string None 0
FLOORI4 Flooring devuy11 155 13.81 adhoc devuy11 easy math sept14 None 0
ANDGRAPH AND Graph None 17 22.97 alex_2oo8 None 0
STRQ Chef and Strings ma5termind 238 10.39 feb15 ma5termind None 0
UNPAIR No Unpaired Chefs pnkjjindal 30 30.25 graph-theory ltime22 mst pnkjjindal None 0
RNG Random Number Generator cgy4ever 87 34.11 cgy4ever march15 None 0
SHGAME A Game With a Sheet of Paper xcwgf666 45 30.64 easy ltime10 nim xcwgf666 None 0
MISINTER Misinterpretation gamabunta 548 46.22 cook12 easy gamabunta None 0
CHGCDG Chef and GCD Game None 153 23.81 cook96 gcd implementation kefaa math pre-process sieve None 0
LCM Adding Least Common Multiples MichaelD 43 17.78 MichaelD hard july10 None 0
CHEFEQ Chef and Equality abhra73 1032 43.19 abhra73 feb15