Codeforces problemset search & solutions
Exclude tags.

Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.

Search on plain tags, ratings, names, and problem text. Example: brute force or binary search

1 2 3 ... 6 7 8 >

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
8487 Tic-tac-toe brute force games implementation Statement C Codeforces Beta Round 3 {3} PROGRAMMING CF beta 3: разбор и эмоции 1700
726233 Watermelon brute force math Statement A Codeforces Beta Round 4 (Div. 2 Only) {4} PROGRAMMING 1200
23629 Triangle brute force geometry Statement A Codeforces Beta Round 6 (Div. 2 Only) {6} PROGRAMMING Round #6 - Tutorial (A,B,C,E) 1300
2368 Lizards and Basements 2 brute force dp Statement D Codeforces Beta Round 6 (Div. 2 Only) {6} PROGRAMMING Beta Round #6 - Разбор задач 2100
8270 Kalevitch and Chess brute force constructive algorithms Statement A Codeforces Beta Round 7 {7} PROGRAMMING 1300
6348 Running Student brute force geometry implementation Statement B Codeforces Beta Round 9 (Div. 2 Only) {9} PROGRAMMING Codeforces Beta Round #9 tutorial 1500
14635 Hexadecimal's Numbers brute force implementation math Statement C Codeforces Beta Round 9 (Div. 2 Only) {9} PROGRAMMING Codeforces Beta Round #9 tutorial 1500
3946 Four Segments brute force constructive algorithms geometry implementation math Statement C Codeforces Beta Round 14 (Div. 2) {14} PROGRAMMING Codeforces Beta Round #14 tutorial 1800
22572 Noldbach problem brute force math number theory Statement A Codeforces Beta Round 17 {17} PROGRAMMING Codeforces Beta Round #17 Tutorial 1100
7158 Triangle brute force geometry Statement A Codeforces Beta Round 18 (Div. 2 Only) {18} PROGRAMMING Codeforces Beta Round #18(Div. 2) Tutorial 1600
2486 Platforms brute force math Statement B Codeforces Beta Round 18 (Div. 2 Only) {18} PROGRAMMING Codeforces Beta Round #18(Div. 2) Tutorial 1700
1332 Seller Bob brute force dp greedy Statement D Codeforces Beta Round 18 (Div. 2 Only) {18} PROGRAMMING Codeforces Beta Round #18(Div. 2) Tutorial 2100
28241 Second Order Statistics brute force Statement A Codeforces Beta Round 22 (Div. 2 Only) {22} PROGRAMMING Codeforces Beta Round #22 Tutorial 1000
4913 Bargaining Table brute force dp Statement B Codeforces Beta Round 22 (Div. 2 Only) {22} PROGRAMMING Codeforces Beta Round #22 Tutorial 1600
6543 You're Given a String... brute force greedy Statement A Codeforces Beta Round 23 {23} PROGRAMMING Codeforces Beta Round #23 tutorial 1200
107304 IQ test brute force Statement A Codeforces Beta Round 25 (Div. 2 Only) {25} PROGRAMMING Codeforces Beta Round #25 Solution Analysis 1300
6010 Tournament bitmasks brute force dfs and similar greedy Statement B Codeforces Beta Round 27 (Codeforces format, Div. 2) {27} PROGRAMMING Codeforces Beta #27 - Tutorial 2000
5025 Number With The Given Amount Of Divisors brute force dp number theory Statement E Codeforces Beta Round 27 (Codeforces format, Div. 2) {27} PROGRAMMING Solution of ABC @ Round#27 2100
8499 Spit Problem brute force Statement A Codeforces Beta Round 29 (Div. 2, Codeforces format) {29} PROGRAMMING My solution @ Round #29, [without Problem E] 1000
4131 Accounting brute force math Statement A Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING Codeforces Beta Round #30. Разбор C 1500
15393 Reconnaissance brute force Statement A Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} PROGRAMMING Beta Round 32 800
693 Collisions brute force implementation math Statement E Codeforces Beta Round 34 (Div. 2) {34} PROGRAMMING Codeforces Beta Round #34 (Div. 2) Разбор 2100
9127 Fire Again brute force dfs and similar shortest paths Statement C Codeforces Beta Round 35 (Div. 2) {35} PROGRAMMING 1600
4156 Chess brute force implementation math Statement B School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) {38} PROGRAMMING Школьная индивидуальная олимпиада #1 - Codeforces Beta Round #38. (Разбор задачи D) 1200
2620 Blinds brute force Statement C School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) {38} PROGRAMMING Школьная индивидуальная олимпиада #1 - Codeforces Beta Round #38. (Разбор задачи C) 1400
4719 Martian Dollar brute force Statement B Codeforces Beta Round 40 (Div. 2) {41} PROGRAMMING Codeforces Beta Round #40 Mini-Tutorial 1500
612 Safe cracking brute force constructive algorithms Statement C Codeforces Beta Round 41 {42} PROGRAMMING Solution of task е, Codeforces beta round #41 2200
1261 Journey brute force constructive algorithms implementation Statement D Codeforces Beta Round 42 (Div. 2) {43} PROGRAMMING Разбор задач A, B, C, D CodeForces Beta Round #42 1900
484 Race brute force implementation two pointers Statement E Codeforces Beta Round 42 (Div. 2) {43} PROGRAMMING Разбор задач A, B, C, D CodeForces Beta Round #42 2200
256 Toys brute force combinatorics Statement I School Team Contest 2 (Winter Computer School 2010/11) {44} PROGRAMMING School Team Contest #2 (Winter Computer School 2010/2011): tutorial of A-E, H, J. 2400
10219 Ball Game brute force implementation Statement A School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round 43 (ACM-ICPC Rules) {46} PROGRAMMING School Individual Contest #2 (WCS 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules): A, C, F and G tutorial 900
1016 Safe brute force Statement D Codeforces Beta Round 44 (Div. 2) {47} PROGRAMMING Codeforces Beta Round #44: tutorial 2100
18657 Triangular numbers brute force math Statement A Codeforces Beta Round 44 (Div. 2) {47} PROGRAMMING Codeforces Beta Round #44: tutorial 800
3103 Land Lot brute force implementation Statement B School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round 45 (ACM-ICPC Rules) {48} PROGRAMMING 1300
2169 Game brute force dp implementation Statement D Codeforces Beta Round 46 (Div. 2) {49} PROGRAMMING 1700
741 Writing a Song brute force dp strings Statement D Codeforces Beta Round 50 {54} PROGRAMMING Codeforces Beta Round #50: Editorial for problem E 2100
3523 Smallest number brute force Statement B Codeforces Beta Round 51 {55} PROGRAMMING Round 51, A 1600
2290 Trees brute force Statement C Codeforces Beta Round 54 (Div. 2) {58} PROGRAMMING Codeforces Beta Round #54 (Div.2) - разбор A-D 1800
725 Mushroom Strife brute force dfs and similar Statement C Codeforces Beta Round 56 {60} PROGRAMMING Solutions for Codeforces Beta Round #56 2100
597 Savior brute force dsu math Statement D Codeforces Beta Round 56 {60} PROGRAMMING Solutions for Codeforces Beta Round #56 2400
2025 Bulls and Cows brute force implementation Statement C Codeforces Beta Round 59 (Div. 2) {63} PROGRAMMING Solutions Codeforces Round #59 1800
299 Prime Segment *special brute force Statement E Unknown Language Round 1 {64} PROGRAMMING 2000
1566 Harry Potter and the History of Magic brute force greedy implementation Statement B Codeforces Beta Round 60 {65} PROGRAMMING Codeforces Beta Round #60: tutorial 1700
513 Harry Potter and the Sorting Hat brute force dfs and similar hashing Statement D Codeforces Beta Round 60 {65} PROGRAMMING Codeforces Beta Round #60: tutorial 2200
23492 Petya and Countryside brute force implementation Statement B Codeforces Beta Round 61 (Div. 2) {66} PROGRAMMING Codeforces Beta Round #61 (Div. 2): Editorial 1200
396 Synchrophasotron brute force Statement C Codeforces Beta Round 62 {68} PROGRAMMING 2200
814 Solitaire brute force implementation Statement D Codeforces Beta Round 65 (Div. 2) {71} PROGRAMMING Разбор задач Codeforces Beta Round #65 (Div. 2) 2200
183 Ali goes shopping *special brute force strings Statement E Unknown Language Round 2 {72} PROGRAMMING 1900
191 Plane of Tanks brute force geometry Statement F Codeforces Beta Round 66 {73} PROGRAMMING Codeforces Beta Round #66 editorial: Problems A, B, C 2700
1992 Heroes brute force implementation Statement A Codeforces Beta Round 69 (Div. 1 Only) {77} PROGRAMMING Problem analysis: Codeforces Beta Round #69 Falling Anvils (Div. 1 - Problem B , Div. 2 - Problem D) 1600
68781 Panoramix's Prediction brute force Statement A Codeforces Beta Round 69 (Div. 2 Only) {80} PROGRAMMING Codeforces Beta Round #69 tutorial 900
2568 Sum of Medians binary search brute force data structures implementation Statement D Yandex.Algorithm 2011: Round 1 {85} PROGRAMMING Yandex.Algorithm 2011 - Round 1. Problem C. Tutorial 2200
242 Long sequence brute force math matrices Statement E Yandex.Algorithm 2011: Round 2 {86} PROGRAMMING Problemset analysis (Yandex, Round 2) 2600
4136 Chord brute force implementation Statement A Codeforces Beta Round 73 (Div. 2 Only) {88} PROGRAMMING Codeforces Beta Round #73. Tutorial (Div2) 1200
711 Chip Play brute force data structures implementation Statement C Codeforces Beta Round 74 (Div. 1 Only) {89} PROGRAMMING Solutions for Codeforces Beta Round #74 2100
469 Azembler brute force implementation Statement C Codeforces Beta Round 76 (Div. 1 Only) {93} PROGRAMMING Codeforces Beta Round 76 - задача Е div 1 глазами ее автора. 2400
19881 Lucky Numbers (easy) binary search bitmasks brute force Statement B Codeforces Beta Round 77 (Div. 2 Only) {96} PROGRAMMING Codeforces Beta Round #77 (Div. 2 Only) Question A - D 1400
355 Domino brute force implementation Statement A Yandex.Algorithm 2011: Finals {97} PROGRAMMING Финал Яндекс.Алгоритм: разбор A-B 2400
391 Robot in Basement bitmasks brute force implementation Statement D Yandex.Algorithm 2011: Finals {97} PROGRAMMING Финал Яндекс.Алгоритм: разбор A-B 2600
1366 Help Victoria the Wise brute force implementation Statement A Codeforces Beta Round 78 (Div. 1 Only) {98} PROGRAMMING Editorial 1700
3475 Clothes brute force Statement A Codeforces Beta Round 79 (Div. 2 Only) {102} PROGRAMMING Codeforces Beta Round 79, editoral 1300
2676 Time to Raid Cowavans brute force data structures sortings Statement D Codeforces Beta Round 80 (Div. 1 Only) {103} PROGRAMMING Tutorial 2200
933 Dark Assembly brute force probabilities Statement B Codeforces Beta Round 81 {105} PROGRAMMING Tutorial 1800
410 Item World brute force implementation sortings Statement C Codeforces Beta Round 81 {105} PROGRAMMING Tutorial 2100
240 Lift and Throw brute force Statement E Codeforces Beta Round 81 {105} PROGRAMMING Tutorial 2400
149 Entertaining Geodetics brute force dsu implementation Statement D Codeforces Beta Round 81 {105} PROGRAMMING Tutorial 2600
6949 Choosing Laptop brute force implementation Statement B Codeforces Beta Round 82 (Div. 2) {106} PROGRAMMING Solutions for Codeforces Beta Round #82 (Div. 2) 1100
1485 Treasure Island brute force implementation Statement D Codeforces Beta Round 82 (Div. 2) {106} PROGRAMMING Solutions for Codeforces Beta Round #82 (Div. 2) 1700
20288 Lucky Sum of Digits brute force implementation Statement A Codeforces Beta Round 84 (Div. 1 Only) {109} PROGRAMMING Tutorial 1200
1829 Lucky Probability brute force probabilities Statement B Codeforces Beta Round 84 (Div. 1 Only) {109} PROGRAMMING Tutorial 2000
144 Lucky Interval brute force math Statement E Codeforces Beta Round 84 (Div. 1 Only) {109} PROGRAMMING Tutorial 2600
3375 Petr# brute force data structures hashing strings Statement B Codeforces Beta Round 86 (Div. 1 Only) {113} PROGRAMMING Codeforces Beta Round #86 Editorial 1900
1511 Double Happiness brute force math number theory Statement C Codeforces Beta Round 86 (Div. 1 Only) {113} PROGRAMMING Codeforces Beta Round #86 Editorial 2200
4352 PFAST Inc. bitmasks brute force graphs Statement B Codeforces Beta Round 86 (Div. 2 Only) {114} PROGRAMMING Codeforces Beta Round #86 Editorial 1500
1758 Very Interesting Game brute force number theory Statement B Codeforces Beta Round 88 {117} PROGRAMMING Неофициальный разбор Codeforces Beta Round #88 1700
3040 Fancy Number brute force greedy sortings strings Statement C Codeforces Beta Round 89 (Div. 2) {118} PROGRAMMING Editorial codeforces beta raund 89. 1700
5756 Elevator brute force implementation math Statement A School Regional Team Contest, Saratov, 2011 {120} PROGRAMMING Tutorial for school regional team contest of Saratov 1000
2115 Three Sons brute force Statement D School Regional Team Contest, Saratov, 2011 {120} PROGRAMMING Tutorial for school regional team contest of Saratov 1400
1481 Lucky Permutation brute force combinatorics number theory Statement C Codeforces Beta Round 91 (Div. 1 Only) {121} PROGRAMMING Разбор задач 2000
155278 Lucky Division brute force number theory Statement A Codeforces Beta Round 91 (Div. 2 Only) {122} PROGRAMMING BIT solution for Codeforces #91 E 1000
13412 Lucky Substring brute force implementation Statement B Codeforces Beta Round 91 (Div. 2 Only) {122} PROGRAMMING BIT solution for Codeforces #91 E 1100
5043 Permutations brute force combinatorics implementation Statement B Codeforces Beta Round 92 (Div. 2 Only) {124} PROGRAMMING Codeforces Beta Round #92 - Analysis 1400
1618 Hot Bath binary search brute force math Statement A Codeforces Beta Round 93 (Div. 1 Only) {126} PROGRAMMING Tutorial 1900
101 Pills brute force flows Statement E Codeforces Beta Round 93 (Div. 1 Only) {126} PROGRAMMING Tutorial 3100
2960 String brute force constructive algorithms hashing implementation string suffix structures strings Statement B Codeforces Beta Round 94 (Div. 1 Only) {128} PROGRAMMING 3219 2200
14228 Students and Shoelaces brute force dfs and similar graphs implementation Statement B Codeforces Beta Round 94 (Div. 2 Only) {129} PROGRAMMING Problem D of Beta Round 94 1200
4973 Average Numbers brute force implementation Statement A Codeforces Testing Round 3 {134} PROGRAMMING 1300
2561 Pairs of Numbers brute force dfs and similar math number theory Statement B Codeforces Testing Round 3 {134} PROGRAMMING 1800
2719 Rectangle and Square brute force geometry math Statement B Codeforces Beta Round 97 (Div. 1) {135} PROGRAMMING Codeforces Beta Round #97: editorial 1600
331 Cycle brute force dfs and similar implementation Statement D Codeforces Beta Round 97 (Div. 1) {135} PROGRAMMING Codeforces Beta Round #97: editorial 2400
232 Hellish Constraints brute force dp two pointers Statement E Codeforces Beta Round 99 (Div. 1) {138} PROGRAMMING Codeforces Beta Round #99: editorial 2900
1761 New Year Cards brute force greedy implementation Statement B Codeforces Round 100 {140} PROGRAMMING Codeforces Round #100: problem analysis 1800
2874 Help Farmer brute force math Statement A Codeforces Round 102 (Div. 1) {142} PROGRAMMING Codeforces Round #102 — Editorial 1700
1019 Help Caretaker brute force dp Statement C Codeforces Round 102 (Div. 1) {142} PROGRAMMING Codeforces Round #102 — Editorial 2300
15734 Help Vasilisa the Wise 2 brute force math Statement A Codeforces Round 102 (Div. 2) {143} PROGRAMMING Codeforces Round #102 (Div. 2) 1200
5044 Lucky Mask brute force implementation Statement B Codeforces Round 104 (Div. 2) {146} PROGRAMMING Codeforces Round #104 (Div. 2) 1300
270 Frames brute force Statement D Codeforces Round 108 (Div. 2) {152} PROGRAMMING Разбор задач Codeforces Round #108 (Div. 2) 2500
97035 I_love_\%username\% brute force Statement A Codeforces Round 109 (Div. 2) {155} PROGRAMMING Codeforces Round #109: editorial 900
3286 Message brute force Statement A Codeforces Round 110 (Div. 1) {156} PROGRAMMING Codeforces Round 110 — Разбор задач 1700
247 Mrs. Hudson's Pancakes brute force dp Statement E Codeforces Round 110 (Div. 1) {156} PROGRAMMING Codeforces Round 110 — Разбор задач 2900
8789 Game Outcome brute force Statement A Codeforces Round 110 (Div. 2) {157} PROGRAMMING Codeforces Round 110 — Разбор задач 1100
6553 Ice Sculptures *special brute force number theory Statement D VK Cup 2012 Qualification Round 1 {158} PROGRAMMING Simple solution to vk cup Qualification Round 1 and 2 1900
3236 String Manipulation 1.0 *special binary search brute force data structures strings Statement C VK Cup 2012 Qualification Round 2 {159} PROGRAMMING Simple solution to vk cup Qualification Round 1 and 2 2000
4754 Palindrome pairs *special brute force dp strings Statement D VK Cup 2012 Qualification Round 2 {159} PROGRAMMING Simple solution to vk cup Qualification Round 1 and 2 2000
5585 Dress'em in Vests! binary search brute force greedy two pointers Statement A VK Cup 2012 Round 1 {161} PROGRAMMING VK Cup 2012 Round 1: editorial 1300
544 Polycarpus the Safecracker brute force dp Statement E VK Cup 2012 Round 1 {161} PROGRAMMING VK Cup 2012 Round 1: editorial 2400
590 Large Refrigerator brute force Statement D VK Cup 2012 Round 2 {163} PROGRAMMING VK Cup 2012 Round 2 — Разбор 2800
396 Minimum Diameter binary search brute force Statement D VK Cup 2012 Round 3 {164} PROGRAMMING VK Cup 2012 Round 3 — Разбор 2900
14134 Another Problem on Strings binary search brute force dp math strings two pointers Statement C Codeforces Round 112 (Div. 2) {165} PROGRAMMING Codeforces Round #112 (Div. 2) Tutorial 1600
10261 Compatible Numbers bitmasks brute force dfs and similar dp Statement E Codeforces Round 112 (Div. 2) {165} PROGRAMMING Codeforces Round #112 (Div. 2) Tutorial 2100
2839 Broken checker *special brute force Statement D April Fools Day Contest {171} PROGRAMMING April Fools Day Contest: editorial 1400
1497 ucyhf *special brute force implementation number theory Statement F April Fools Day Contest {171} PROGRAMMING April Fools Day Contest: editorial 1700
8298 Phone Code *special brute force implementation Statement A Croc Champ 2012 - Qualification Round {172} PROGRAMMING 1600
1124 Spiral Maximum brute force dp Statement C Croc Champ 2012 - Round 1 {173} PROGRAMMING Croc Champ 2012 — Round 1 — Editorial 1800
2598 Robot Bicorn Attack brute force implementation Statement A Codeforces Round 115 {175} PROGRAMMING Codeforces Round #115 — editorial F 1400
346 Plane of Tanks: Duel brute force dp math probabilities Statement D Codeforces Round 115 {175} PROGRAMMING Codeforces Round #115 — editorial A-E 2400
306 Power Defence brute force dp geometry greedy Statement E Codeforces Round 115 {175} PROGRAMMING Codeforces Round #115 — editorial A-E 2500
2805 Encrypting Messages brute force Statement D1 ABBYY Cup 2.0 - Easy {177} PROGRAMMING 1200
3107 Party brute force dfs and similar dsu graphs Statement C2 ABBYY Cup 2.0 - Easy {177} PROGRAMMING 1500
3603 Number of Triplets binary search brute force Statement B Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) {181} PROGRAMMING Croc Champ 2012 — Round 2 — Editorial 1300
9042 Series of Crimes brute force geometry implementation Statement A Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) {181} PROGRAMMING Croc Champ 2012 — Round 2 — Editorial 800
9452 Common Divisors brute force hashing implementation math strings Statement D Codeforces Round 117 (Div. 2) {182} PROGRAMMING Codeforces Round #117 (Div. 2) Разбор Задач 1400
864 Zoo brute force geometry Statement B Croc Champ 2012 - Final {183} PROGRAMMING CROC Champ 2012 — Round 3 (Editorial) 1700
84816 Cut Ribbon brute force dp Statement A Codeforces Round 119 (Div. 2) {189} PROGRAMMING Codeforces Round #119 — Editorial 1300
4263 Counting Rhombi brute force math Statement B Codeforces Round 119 (Div. 2) {189} PROGRAMMING Codeforces Round #119 — Editorial 1400
6870 Walking in the Rain brute force implementation Statement B Codeforces Round 121 (Div. 2) {192} PROGRAMMING 1100
11714 Funky Numbers binary search brute force implementation Statement A Codeforces Round 121 (Div. 2) {192} PROGRAMMING tutorial 1300
1188 Xor brute force Statement B Codeforces Round 122 (Div. 1) {193} PROGRAMMING Editoral Codeforces Round #122 2100
427 Fibonacci Number brute force math matrices Statement E Codeforces Round 122 (Div. 1) {193} PROGRAMMING Editoral Codeforces Round #122 2900
10366 Let's Watch Football binary search brute force math Statement A Codeforces Round 123 (Div. 2) {195} PROGRAMMING Codeforces Round #123 (Div. 2) Разбор Задач 1100
31053 Hexadecimal's theorem brute force constructive algorithms implementation number theory Statement A Codeforces Round 125 (Div. 2) {199} PROGRAMMING Solutions for Codeforces Round #125 1000
1224 Football Championship brute force implementation Statement C Codeforces Round 126 (Div. 2) {200} PROGRAMMING Editorial of Codeforces Round #126 (Div. 2) 1700
1068 Programming Language binary search brute force expression parsing implementation Statement D Codeforces Round 126 (Div. 2) {200} PROGRAMMING Editorial of Codeforces Round #126 (Div. 2) 1800
762 Cinema brute force data structures Statement A Codeforces Round 126 (Div. 2) {200} PROGRAMMING Editorial of Codeforces Round #126 (Div. 2) 2600
494 Brand New Problem bitmasks brute force dp Statement D Codeforces Round 127 (Div. 1) {201} PROGRAMMING 2500
865 Brand New Easy Problem brute force Statement B Codeforces Round 127 (Div. 2) {202} PROGRAMMING 1700
20241 LLPS binary search bitmasks brute force greedy implementation strings Statement A Codeforces Round 127 (Div. 2) {202} PROGRAMMING 900
4475 Two Problems brute force implementation Statement A Codeforces Round 128 (Div. 2) {203} PROGRAMMING 1200
2832 Game on Paper brute force implementation Statement B Codeforces Round 128 (Div. 2) {203} PROGRAMMING 1400
25648 Little Elephant and Rozdil brute force implementation Statement A Codeforces Round 129 (Div. 2) {205} PROGRAMMING Codeforces Round #129 — Editorial 1000
6540 Little Elephant and Sorting brute force greedy Statement B Codeforces Round 129 (Div. 2) {205} PROGRAMMING Codeforces Round #129 — Editorial 1400
44255 System of Equations brute force Statement A Codeforces Round 131 (Div. 2) {214} PROGRAMMING Codeforces Round #131 Tutorial 1000
5410 Hometask brute force constructive algorithms greedy math Statement B Codeforces Round 131 (Div. 2) {214} PROGRAMMING Codeforces Round #131 Tutorial 1600
16398 Bicycle Chain brute force implementation Statement A Codeforces Round 132 (Div. 2) {215} PROGRAMMING Codeforces Round #132 (Div. 2) Tutorial 1000
740 Crosses brute force implementation Statement C Codeforces Round 132 (Div. 2) {215} PROGRAMMING Codeforces Round #132 (Div. 2) Tutorial 2100
25624 Ice Skating brute force dfs and similar dsu graphs Statement A Codeforces Round 134 (Div. 1) {217} PROGRAMMING Editorial for Codeforces Round #134 1400
1263 Blackboard Fibonacci brute force math Statement B Codeforces Round 134 (Div. 1) {217} PROGRAMMING Editorial for Codeforces Round #134 2200
282 Bitonix' Patrol bitmasks brute force combinatorics dfs and similar math Statement D Codeforces Round 134 (Div. 1) {217} PROGRAMMING Editorial for Codeforces Round #134 2800
10730 Mountain Scenery brute force constructive algorithms implementation Statement A Codeforces Round 134 (Div. 2) {218} PROGRAMMING Editorial for Codeforces Round #134 1100
7311 Color Stripe brute force dp greedy Statement C Codeforces Round 135 (Div. 2) {219} PROGRAMMING User editorial for Codeforces Round #135 (Div. 2) 1600
12030 Shooshuns and Sequence brute force implementation Statement A Codeforces Round 137 (Div. 2) {222} PROGRAMMING Разбор задач 1200
30937 Parallelepiped brute force geometry math Statement A Codeforces Round 138 (Div. 2) {224} PROGRAMMING 1100
3664 Two Tables brute force implementation Statement B Codeforces Round 141 (Div. 2) {228} PROGRAMMING Codeforces Round #141 (Div. 2) Tutorial 1400
3796 Shifts brute force two pointers Statement A Codeforces Round 142 (Div. 1) {229} PROGRAMMING Codeforces Round #142 Problem Analysis 1600
4379 Magic Box brute force geometry Statement D Codeforces Round 143 (Div. 2) {231} PROGRAMMING Tutorial Codeforces Round #143 1600
453808 Team brute force greedy Statement A Codeforces Round 143 (Div. 2) {231} PROGRAMMING Tutorial Codeforces Round #143 800
8402 Non-square Equation binary search brute force math Statement B Codeforces Round 144 (Div. 2) {233} PROGRAMMING Editorial for Codeforces Round #144 1500
295445 Boy or Girl brute force implementation strings Statement A Codeforces Round 146 (Div. 2) {236} PROGRAMMING Codeforces Round #146 Tutorial 800
1492 Easy Tape Programming brute force implementation Statement B Codeforces Round 148 (Div. 2) {239} PROGRAMMING Editorial for Codeforces Round #148 1500
306 Race brute force implementation Statement F Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) {241} PROGRAMMING 2300
6916 Heads or Tails brute force implementation Statement A Codeforces Round 149 (Div. 2) {242} PROGRAMMING Codeforces Round #149 (Div. 2) Tutorial 1100
4989 Undoubtedly Lucky Numbers bitmasks brute force dfs and similar Statement B Codeforces Round 150 (Div. 2) {244} PROGRAMMING Editorial for Codeforces Round #150 1600
1003 Log Stream Analysis binary search brute force implementation strings Statement F CROC-MBTU 2012, Elimination Round (ACM-ICPC) {245} PROGRAMMING КРОК-МВТУ 2012, Отборочный раунд (Разбор) 2000
567 Suggested Friends brute force graphs Statement G CROC-MBTU 2012, Elimination Round (ACM-ICPC) {245} PROGRAMMING CROC-MBTU 2012, Elimination Round — Editorial 2200
2851 Beauty Pageant brute force constructive algorithms greedy Statement C Codeforces Round 151 (Div. 2) {246} PROGRAMMING Codeforces Round #151 (Div. 2) Tutorial 1600
10438 Colorful Graph brute force dfs and similar graphs Statement D Codeforces Round 151 (Div. 2) {246} PROGRAMMING Codeforces Round #151 (Div. 2) Tutorial 1700
526 Mad Joe brute force Statement E CROC-MBTU 2012, Final Round (Online version, Div. 2) {250} PROGRAMMING CROC-MBTU 2012, Final Round, Editorial 2400
5960 Little Xor brute force implementation Statement A Codeforces Round 153 (Div. 2) {252} PROGRAMMING Editorial of Codeforces Round #153 1200
1899 Unsorting Array brute force sortings Statement B Codeforces Round 153 (Div. 2) {252} PROGRAMMING Editorial of Codeforces Round #153 1700
935 Table with Letters - 2 brute force two pointers Statement D Codeforces Round 154 (Div. 2) {253} PROGRAMMING Codeforces Round #154 (Div. 2) — tutorial 2000
2278 Jury Size brute force implementation Statement B Codeforces Round 155 (Div. 2) {254} PROGRAMMING Codeforces Round #155 (Div. 2) — tutorial 1500
672 Rats brute force dfs and similar graphs implementation shortest paths Statement D Codeforces Round 155 (Div. 2) {254} PROGRAMMING Codeforces Round #155 (Div. 2) — tutorial 2600
5096 Almost Arithmetical Progression brute force dp Statement C Codeforces Round 156 (Div. 2) {255} PROGRAMMING Codeforces Round #156 tutorial 1700
4799 View Angle brute force geometry math Statement C Codeforces Round 159 (Div. 2) {257} PROGRAMMING Codeforces Round #159 (Div. 2) Разбор Задач 1700
1633 Little Elephant and Elections brute force combinatorics dp Statement B Codeforces Round 157 (Div. 1) {258} PROGRAMMING Codeforces Round #157 — Editorial 2100
14792 Little Elephant and Magic Square brute force implementation Statement B Codeforces Round 157 (Div. 2) {259} PROGRAMMING Codeforces Round #157 — Editorial 1100
10175 Little Elephant and Chess brute force strings Statement A Codeforces Round 157 (Div. 2) {259} PROGRAMMING Codeforces Round #157 — Editorial 1100
4109 Ancient Prophesy brute force implementation strings Statement B Codeforces Round 158 (Div. 2) {260} PROGRAMMING Codeforces Round #158 (Div. 2) Tutorial 1600
551 Dividing Kingdom binary search brute force data structures Statement E Codeforces Round 158 (Div. 2) {260} PROGRAMMING Codeforces Round #158 (Div. 2) Tutorial 2600
452 Maxim and Calculator brute force dp two pointers Statement E Codeforces Round 160 (Div. 1) {261} PROGRAMMING Codeforces Round #160 tutorial 2800
1164 Circle of Numbers brute force dfs and similar implementation Statement C Codeforces Round 161 (Div. 2) {263} PROGRAMMING Codeforces Round #161 Tutorial 2000
457 Rhombus brute force data structures dp Statement E Codeforces Round 161 (Div. 2) {263} PROGRAMMING Codeforces Round #161 Tutorial 2600
107842 Games brute force Statement A Codeforces Round 164 (Div. 2) {268} PROGRAMMING Codeforces Round #164 (Div. 2) — Problems Analysis 800
15905 Prime Matrix binary search brute force math number theory Statement B Codeforces Round 166 (Div. 2) {271} PROGRAMMING editroal 1400
186292 Beautiful Year brute force Statement A Codeforces Round 166 (Div. 2) {271} PROGRAMMING editroal 900
395 The Last Hole! brute force geometry Statement C Codeforces Round 168 (Div. 1) {274} PROGRAMMING Codeforces Round #168 Editorial 2600
3659 New Problem brute force strings Statement B Codeforces Round 170 (Div. 2) {278} PROGRAMMING Codeforces Round #170 Tutorial 1500
79284 Books binary search brute force implementation two pointers Statement B Codeforces Round 171 (Div. 2) {279} PROGRAMMING Codeforces Round #171 (Div. 2) Разбор Задач 1400
5995 Point on Spiral brute force geometry implementation Statement A Codeforces Round 171 (Div. 2) {279} PROGRAMMING Codeforces Round #171 (Div. 2) Разбор Задач 1400
3462 Nearest Fraction brute force implementation two pointers Statement B Codeforces Round 172 (Div. 2) {281} PROGRAMMING Codeforces Round #172 Editorial 1700
7443 Cows and Poker Game brute force implementation Statement B Codeforces Round 174 (Div. 2) {284} PROGRAMMING Editorial for Codeforces #174 1100
22348 IQ Test brute force implementation Statement A Codeforces Round 176 (Div. 2) {287} PROGRAMMING Разбор задач 1200
10516 Polo the Penguin and Segments brute force implementation Statement A Codeforces Round 177 (Div. 2) {289} PROGRAMMING Codeforces Round #177, editorial 1100
19260 Polo the Penguin and Matrix brute force dp implementation sortings ternary search Statement B Codeforces Round 177 (Div. 2) {289} PROGRAMMING Codeforces Round #177, editorial 1400
1902 Network Mask *special bitmasks brute force implementation Statement C Croc Champ 2013 - Qualification Round {291} PROGRAMMING 2100
1348 Beautiful IP Addresses brute force Statement C Croc Champ 2013 - Round 1 {292} PROGRAMMING Чемпионат КРОК 2013 — Раунд 1 (Разбор задач) 2000
700 Cube Problem brute force math number theory Statement C Croc Champ 2013 - Round 2 {293} PROGRAMMING Croc Champ 2013 — Round 2 — Editorial 2300
1011 Distinct Paths brute force combinatorics Statement B Croc Champ 2013 - Round 2 {293} PROGRAMMING Croc Champ 2013 — Round 2 — Editorial 2600
419 Shaass and Painter Robot brute force implementation number theory Statement D Codeforces Round 178 (Div. 2) {294} PROGRAMMING Codeforces Round #178 Editorial 2700
16054 Sail brute force greedy implementation Statement B Codeforces Round 180 (Div. 2) {298} PROGRAMMING Codeforces Round #180 Editorial 1300
6671 Ksusha the Squirrel brute force implementation Statement B Croc Champ 2013 - Round 2 (Div. 2 Edition) {299} PROGRAMMING Croc Champ 2013 — Round 2 — Editorial 1000
9597 Ksusha and Array brute force number theory sortings Statement A Croc Champ 2013 - Round 2 (Div. 2 Edition) {299} PROGRAMMING Croc Champ 2013 — Round 2 — Editorial 1000
28245 Array brute force constructive algorithms implementation Statement A Codeforces Round 181 (Div. 2) {300} PROGRAMMING English Tutorial 1200
7378 Coach brute force dfs and similar graphs Statement B Codeforces Round 181 (Div. 2) {300} PROGRAMMING English Tutorial 1500
12734 Beautiful Numbers brute force combinatorics Statement C Codeforces Round 181 (Div. 2) {300} PROGRAMMING English Tutorial 1800
989 Minimum Modular brute force graphs math number theory Statement C Codeforces Round 183 (Div. 1) {303} PROGRAMMING Codeforces Round #183 Editorial 2700
12252 Pythagorean Theorem II brute force math Statement A Codeforces Round 183 (Div. 2) {304} PROGRAMMING Codeforces Round #183 Editorial 1300
3197 Calendar brute force implementation Statement B Codeforces Round 183 (Div. 2) {304} PROGRAMMING Codeforces Round #183 Editorial 1400
5271 Strange Addition brute force constructive algorithms implementation Statement A Codeforces Round 184 (Div. 2) {305} PROGRAMMING 7712 1600
2322 Continued Fractions brute force implementation math Statement B Codeforces Round 184 (Div. 2) {305} PROGRAMMING 7712 1600
204 Tennis Rackets brute force geometry Statement D Croc Champ 2013 - Finals (online version, Div. 1) {309} PROGRAMMING Чемпионат КРОК 2013 — Финальный раунд — Разбор 2600
604 Fetch the Treasure brute force data structures graphs shortest paths Statement C Codeforces Round 185 (Div. 1) {311} PROGRAMMING Codeforces Round #185 Editorial 2600
12486 Sereja and Bottles brute force Statement A Codeforces Round 187 (Div. 2) {315} PROGRAMMING Codeforces Round #187 tutorial 1400
1564 Summer Homework brute force data structures Statement E1 ABBYY Cup 3.0 {316} PROGRAMMING ABBYY Cup 3.0. Solutions 1500
1511 EKG brute force dfs and similar Statement B1 ABBYY Cup 3.0 {316} PROGRAMMING ABBYY Cup 3.0. Solutions 1600
635 PE Lesson brute force dp Statement D1 ABBYY Cup 3.0 {316} PROGRAMMING ABBYY Cup 3.0. Solutions 2300
4969 Perfect Pair brute force Statement A Codeforces Round 188 (Div. 1) {317} PROGRAMMING Codeforces Round #188 (разбор) 1600
1687 Ants brute force implementation Statement B Codeforces Round 188 (Div. 1) {317} PROGRAMMING Analysis 2000
46541 Magic Numbers brute force greedy Statement A Codeforces Round 189 (Div. 2) {320} PROGRAMMING Codeforces Round #189 — Editorial 1000
52087 Flipping Game brute force dp implementation Statement A Codeforces Round 191 (Div. 2) {327} PROGRAMMING Codeforces Round #191 — Tutorial 1200
32065 Cakeminator brute force implementation Statement A Codeforces Round 192 (Div. 2) {330} PROGRAMMING Codeforces Round #192 Editorial 900
1538 Oh Sweet Beaverette brute force implementation Statement A1 ABBYY Cup 3.0 - Finals (online version) {331} PROGRAMMING ABBYY Cup 3.0 — Finals. Solutions 1400
2281 Characteristics of Rectangles binary search bitmasks brute force implementation sortings Statement D Codeforces Round 194 (Div. 1) {333} PROGRAMMING Codeforces Round 194 — Editoral 2100
1314 Summer Earnings binary search bitmasks brute force geometry sortings Statement E Codeforces Round 194 (Div. 1) {333} PROGRAMMING Codeforces Round 194 — Editoral 2400
442 Lucky Tickets brute force constructive algorithms Statement C Codeforces Round 194 (Div. 1) {333} PROGRAMMING Codeforces Round 194 — Editoral 2800
372 Rectangles and Square brute force dp Statement D MemSQL start[c]up Round 2 - online version {335} PROGRAMMING MemSQL start[c]up Round 2 -- Editorial 2400
2679 Vasily the Bear and Sequence brute force greedy implementation number theory Statement C Codeforces Round 195 (Div. 2) {336} PROGRAMMING Tutorial Codeforces Round #195 (Div. 2) 1800
1163 Divisor Tree brute force number theory trees Statement E Codeforces Round 196 (Div. 2) {337} PROGRAMMING Codeforces Round #196 — Problems Analysis 2400
2394 Maximal Area Quadrilateral brute force geometry Statement B Codeforces Round 198 (Div. 2) {340} PROGRAMMING Tutorial 2000
4233 Xenia and Spies brute force greedy implementation Statement B Codeforces Round 199 (Div. 2) {342} PROGRAMMING Tutorial 1500
993 Pumping Stations brute force dfs and similar divide and conquer flows graphs greedy trees Statement E Codeforces Round 200 (Div. 1) {343} PROGRAMMING Codeforces Round #200 Tutorial 2800
9702 Simple Molecules brute force graphs math Statement B Codeforces Round 200 (Div. 2) {344} PROGRAMMING Codeforces Round #200 Tutorial 1300
9962 Fixed Points brute force implementation math Statement B Codeforces Round 201 (Div. 2) {347} PROGRAMMING Codeforces Round #201 Editorial 1200
2938 Subset Sums brute force data structures Statement C Codeforces Round 202 (Div. 1) {348} PROGRAMMING Editorial for Codeforces Round #202 2600
17701 TL brute force greedy implementation Statement A Codeforces Round 203 (Div. 2) {350} PROGRAMMING Editorial Codeforces Round #203 (Div. 2) 1300
885 Wrong Floyd brute force constructive algorithms dfs and similar graphs Statement E Codeforces Round 203 (Div. 2) {350} PROGRAMMING Editorial Codeforces Round #203 (Div. 2) 2200
29118 Jeff and Digits brute force implementation math Statement A Codeforces Round 204 (Div. 2) {352} PROGRAMMING 1100
5686 Vasya and Robot brute force greedy math Statement A Codeforces Round 206 (Div. 1) {354} PROGRAMMING Codeforces Round #206 — Editorial 1600
3399 Vasya and Beautiful Arrays brute force dp number theory Statement C Codeforces Round 206 (Div. 1) {354} PROGRAMMING Codeforces Round #206 — Editorial 2000
7794 Group of Students brute force greedy implementation Statement A Codeforces Round 207 (Div. 2) {357} PROGRAMMING Codeforces Round #207: tutorial 1200
8203 Dima and Continuous Line brute force implementation Statement A Codeforces Round 208 (Div. 2) {358} PROGRAMMING Codeforces Round #208 (Div. 2) Разбор 1400
3921 Dima and Text Messages brute force strings Statement B Codeforces Round 208 (Div. 2) {358} PROGRAMMING Codeforces Round #208 (Div. 2) Разбор 1500
448 Dima and Kicks brute force dsu graphs implementation Statement E Codeforces Round 208 (Div. 2) {358} PROGRAMMING Codeforces Round #208 (Div. 2) Разбор 2600
5930 Pair of Numbers binary search brute force data structures math two pointers Statement D Codeforces Round 209 (Div. 2) {359} PROGRAMMING Editorial Codeforces Round #209 (Div. 2) 2100
71390 Fence brute force dp Statement B Codeforces Round 211 (Div. 2) {363} PROGRAMMING 9537 1200
255 Two Circles brute force data structures implementation Statement E Codeforces Round 211 (Div. 2) {363} PROGRAMMING 9537 2600
657 Beautiful Set brute force number theory Statement C Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 2500
2658 Ghd brute force math probabilities Statement D Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 2600
7206 Dima and To-do List brute force implementation Statement B Codeforces Round 214 (Div. 2) {366} PROGRAMMING Codeforces Round #214 (Div. 2) — Tutorial 1200
876 Dima and Magic Guitar brute force implementation math Statement E Codeforces Round 214 (Div. 2) {366} PROGRAMMING Codeforces Round #214 (Div. 2) — Tutorial 2300