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.

Get exact match for tags using this format, eg: [u'brute force', 'dp']

< 1 2 3 4 ... 100 101 102 >

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
1715 Scheme dfs and similar graphs trees Statement E Codeforces Beta Round 22 (Div. 2 Only) {22} PROGRAMMING Codeforces Beta Round #22 Tutorial 2400
5497 You're Given a String... brute force greedy Statement A Codeforces Beta Round 23 {23} PROGRAMMING Codeforces Beta Round #23 tutorial 1200
3426 Party constructive algorithms graphs math Statement B Codeforces Beta Round 23 {23} PROGRAMMING Codeforces Beta Round #23 tutorial 1600
639 Tree dp Statement E Codeforces Beta Round 23 {23} PROGRAMMING Codeforces Beta Round #23 tutorial 2500
1444 Oranges and Apples constructive algorithms sortings Statement C Codeforces Beta Round 23 {23} PROGRAMMING Codeforces Beta Round #23 tutorial 2500
339 Tetragon geometry math Statement D Codeforces Beta Round 23 {23} PROGRAMMING Codeforces Beta Round #23 tutorial 2600
5364 Ring road graphs Statement A Codeforces Beta Round 24 {24} PROGRAMMING Codeforces Beta Round #24 solutions 1400
1807 F1 Champions implementation Statement B Codeforces Beta Round 24 {24} PROGRAMMING 1500
1271 Sequence of points geometry implementation math Statement C Codeforces Beta Round 24 {24} PROGRAMMING Codeforces Beta Round #24 solutions 1800
919 Berland collider binary search Statement E Codeforces Beta Round 24 {24} PROGRAMMING Codeforces Beta Round #24 solutions 2300
2019 Broken robot dp probabilities Statement D Codeforces Beta Round 24 {24} PROGRAMMING Codeforces Beta Round #24 solutions 2400
9883 Phone numbers implementation Statement B Codeforces Beta Round 25 (Div. 2 Only) {25} PROGRAMMING Codeforces Beta Round #25 Solution Analysis 1100
89047 IQ test brute force Statement A Codeforces Beta Round 25 (Div. 2 Only) {25} PROGRAMMING Codeforces Beta Round #25 Solution Analysis 1300
6462 Roads in Berland graphs shortest paths Statement C Codeforces Beta Round 25 (Div. 2 Only) {25} PROGRAMMING 1800
11799 Roads not only in Berland ds graphs trees Statement D Codeforces Beta Round 25 (Div. 2 Only) {25} PROGRAMMING Codeforces Beta Round #25 Solution Analysis 1900
2552 Test hashing strings Statement E Codeforces Beta Round 25 (Div. 2 Only) {25} PROGRAMMING Codeforces Beta Round #25 Solution Analysis 2300
870 Parquet combinatorics constructive algorithms Statement C Codeforces Beta Round 26 (Codeforces format) {26} PROGRAMMING Разбор Codeforces Beta Round #26 (ещё один) 2200
20193 Regular Bracket Sequence greedy Statement B Codeforces Beta Round 26 (Codeforces format) {26} PROGRAMMING Разбор Codeforces Beta Round #26 (ещё один) 2300
32801 Almost Prime number theory Statement A Codeforces Beta Round 26 (Codeforces format) {26} PROGRAMMING Разбор Codeforces Beta Round #26 (ещё один) 2400
381 Multithreading constructive algorithms Statement E Codeforces Beta Round 26 (Codeforces format) {26} PROGRAMMING 2700
809 Tickets combinatorics math probabilities Statement D Codeforces Beta Round 26 (Codeforces format) {26} PROGRAMMING Разбор Codeforces Beta Round #26 (ещё один) 2800
20729 Next Test implementation sortings Statement A Codeforces Beta Round 27 (Codeforces format, Div. 2) {27} PROGRAMMING Solution of ABC @ Round#27 1900
2828 Unordered Subsequence constructive algorithms greedy Statement C Codeforces Beta Round 27 (Codeforces format, Div. 2) {27} PROGRAMMING Solution of ABC @ Round#27 2000
5427 Tournament bitmasks brute force dfs and similar greedy Statement B Codeforces Beta Round 27 (Codeforces format, Div. 2) {27} PROGRAMMING 2000
4305 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
2597 Ring Road 2 2-sat dfs and similar ds graphs Statement D Codeforces Beta Round 27 (Codeforces format, Div. 2) {27} PROGRAMMING Solution of ABC @ Round#27 2300
4784 pSort dfs and similar ds graphs Statement B Codeforces Beta Round 28 (Codeforces format) {28} PROGRAMMING Codeforces Beta Round #28 (Разбор задач A и B) 1600
808 Bender Problem implementation Statement A Codeforces Beta Round 28 (Codeforces format) {28} PROGRAMMING Codeforces Beta Round #28 (Разбор задач A и B) 2200
622 Don't fear, DravDe is kind binary search data structures dp hashing Statement D Codeforces Beta Round 28 (Codeforces format) {28} PROGRAMMING Codeforces Beta Round #28 (Разбор задач A и B) 2600
94 DravDe saves the world geometry math Statement E Codeforces Beta Round 28 (Codeforces format) {28} PROGRAMMING 2700
1071 Bath Queue combinatorics dp probabilities Statement C Codeforces Beta Round 28 (Codeforces format) {28} PROGRAMMING Codeforces Beta Round #28 (Разбор задач A и B) 2700
7238 Spit Problem brute force Statement A Codeforces Beta Round 29 (Div. 2, Codeforces format) {29} PROGRAMMING My solution @ Round #29, [without Problem E] 1000
3012 Traffic Lights implementation Statement B Codeforces Beta Round 29 (Div. 2, Codeforces format) {29} PROGRAMMING My solution @ Round #29, [without Problem E] 1500
5133 Mail Stamps data structures dfs and similar graphs implementation Statement C Codeforces Beta Round 29 (Div. 2, Codeforces format) {29} PROGRAMMING My solution @ Round #29, [without Problem E] 1700
2520 Ant on the Tree constructive algorithms dfs and similar trees Statement D Codeforces Beta Round 29 (Div. 2, Codeforces format) {29} PROGRAMMING My solution @ Round #29, [without Problem E] 1900
938 Quarrel graphs shortest paths Statement E Codeforces Beta Round 29 (Div. 2, Codeforces format) {29} PROGRAMMING 2400
3530 Accounting brute force math Statement A Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING Codeforces Beta Round #30. Разбор C 1500
1214 Codeforces World Finals implementation Statement B Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING Codeforces Beta Round #30. Разбор C 1700
1999 Shooting Gallery dp probabilities Statement C Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING Codeforces Beta Round #30. Разбор C 1800
457 King's Problem? geometry greedy Statement D Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING Codeforces Beta Round #30. Разбор C 2600
751 Tricky and Clever Password binary search constructive algorithms data structures greedy hashing strings Statement E Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING 2700
10509 Worms Evolution implementation Statement A Codeforces Beta Round 31 (Div. 2, Codeforces format) {31} PROGRAMMING 1200
4380 Sysadmin Bob greedy implementation strings Statement B Codeforces Beta Round 31 (Div. 2, Codeforces format) {31} PROGRAMMING 1500
1845 Schedule implementation Statement C Codeforces Beta Round 31 (Div. 2, Codeforces format) {31} PROGRAMMING 1700
1051 Chocolate dfs and similar implementation Statement D Codeforces Beta Round 31 (Div. 2, Codeforces format) {31} PROGRAMMING 2000
1123 TV Game dp Statement E Codeforces Beta Round 31 (Div. 2, Codeforces format) {31} PROGRAMMING 2200
2198 Flea math Statement C Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} PROGRAMMING Beta Round 32 1700
1297 Constellation implementation Statement D Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} PROGRAMMING Beta Round 32 1700
345 Hide-and-Seek geometry implementation Statement E Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} PROGRAMMING 2300
12896 Reconnaissance brute force Statement A Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} PROGRAMMING Beta Round 32 800
66465 Borze expression parsing implementation Statement B Codeforces Beta Round 32 (Div. 2, Codeforces format) {32} PROGRAMMING Beta Round 32 900
4188 What is for dinner? greedy implementation Statement A Codeforces Beta Round 33 (Codeforces format) {33} PROGRAMMING 1300
3058 Wonderful Randomized Sum greedy Statement C Codeforces Beta Round 33 (Codeforces format) {33} PROGRAMMING Codeforces Beta Round #33 (personal participation commentaries) 1800
4698 String Problem shortest paths Statement B Codeforces Beta Round 33 (Codeforces format) {33} PROGRAMMING Codeforces Beta Round #33 (personal participation commentaries) 1800
1243 Knights geometry graphs shortest paths sortings Statement D Codeforces Beta Round 33 (Codeforces format) {33} PROGRAMMING 2000
131 Helper Statement E Codeforces Beta Round 33 (Codeforces format) {33} PROGRAMMING 2500
54603 Sale greedy sortings Statement B Codeforces Beta Round 34 (Div. 2) {34} PROGRAMMING Codeforces Beta Round #34 (Div. 2) Разбор 1000
30777 Reconnaissance 2 implementation Statement A Codeforces Beta Round 34 (Div. 2) {34} PROGRAMMING Codeforces Beta Round #34 (Div. 2) Разбор 1100
4313 Page Numbers expression parsing implementation sortings strings Statement C Codeforces Beta Round 34 (Div. 2) {34} PROGRAMMING Codeforces Beta Round #34 (Div. 2) Разбор 1400
5302 Road Map dfs and similar graphs Statement D Codeforces Beta Round 34 (Div. 2) {34} PROGRAMMING Codeforces Beta Round #34 (Div. 2) Разбор 1700
594 Collisions brute force implementation math Statement E Codeforces Beta Round 34 (Div. 2) {34} PROGRAMMING Codeforces Beta Round #34 (Div. 2) Разбор 2100
6892 Shell Game implementation Statement A Codeforces Beta Round 35 (Div. 2) {35} PROGRAMMING 1100
7057 Fire Again brute force dfs and similar shortest paths Statement C Codeforces Beta Round 35 (Div. 2) {35} PROGRAMMING 1600
1032 Warehouse implementation Statement B Codeforces Beta Round 35 (Div. 2) {35} PROGRAMMING 1700
3415 Animals dp greedy Statement D Codeforces Beta Round 35 (Div. 2) {35} PROGRAMMING 1700
759 Parade data structures sortings Statement E Codeforces Beta Round 35 (Div. 2) {35} PROGRAMMING 2300
3057 Extra-terrestrial Intelligence implementation Statement A Codeforces Beta Round 36 {36} PROGRAMMING Codeforces Beta Round #36 1400
1534 Fractal implementation Statement B Codeforces Beta Round 36 {36} PROGRAMMING Codeforces Beta Round #36 1600
715 New Game with a Chess Piece games Statement D Codeforces Beta Round 36 {36} PROGRAMMING Codeforces Beta Round #36 2200
340 Bowls geometry implementation Statement C Codeforces Beta Round 36 {36} PROGRAMMING Codeforces Beta Round #36 2200
542 Two Paths constructive algorithms ds graphs implementation Statement E Codeforces Beta Round 36 {36} PROGRAMMING 2500
24900 Towers sortings Statement A Codeforces Beta Round 37 {37} PROGRAMMING Codeforces Beta Round #37 (Tutorial) 1100
971 Computer Game greedy implementation Statement B Codeforces Beta Round 37 {37} PROGRAMMING 1800
1751 Old Berland Language data structures greedy trees Statement C Codeforces Beta Round 37 {37} PROGRAMMING Codeforces Beta Round #37 (Tutorial) 1900
423 Lesson Timetable combinatorics dp math Statement D Codeforces Beta Round 37 {37} PROGRAMMING 2300
631 Trial for Chief graphs greedy shortest paths Statement E Codeforces Beta Round 37 {37} PROGRAMMING Codeforces Beta Round #37 (Tutorial) 2600
3586 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
2268 Blinds brute force Statement C School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) {38} PROGRAMMING 1400
2627 Let's Go Rolling! dp sortings Statement E 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) 1800
542 Vasya the Architect implementation Statement D School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) {38} PROGRAMMING 2000
395 Smart Boy dp games strings Statement F 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) 2200
712 Queue data structures Statement G School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) {38} PROGRAMMING 2300
314 The Great Marathon dp Statement H School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) {38} PROGRAMMING 2500
21885 Army implementation Statement A 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) 900
4070 Cubical Planet math Statement D School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial 1100
2716 Company Income Growth greedy Statement B School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING 1200
1602 Pacifist frogs implementation Statement F School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING 1300
2802 Multiplication Table implementation Statement H School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial 1300
3044 Spelling Check hashing implementation strings Statement J School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial 1600
890 What Has Dirichlet Got to Do with That? dp games Statement E School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial 2100
717 C*++ Calculations expression parsing greedy Statement A School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING 2100
613 Moon Craters dp sortings Statement C School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING 2300
130 Inverse Function implementation Statement G School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial 2500
144 Tram Statement I School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING 2700
86 Testing Statement K School Team Contest 1 (Winter Computer School 2010/11) {39} PROGRAMMING School Team Contest #1 (Winter Computer School 2010/11): Problem K Tutorial 2700
4097 Find Color constructive algorithms geometry implementation math Statement A Codeforces Beta Round 39 {40} PROGRAMMING codeforces #39 1300
1189 Repaintings math Statement B Codeforces Beta Round 39 {40} PROGRAMMING codeforces #39 1600
256 Berland Square implementation math Statement C Codeforces Beta Round 39 {40} PROGRAMMING codeforces #39 2200
688 Number Table combinatorics Statement E Codeforces Beta Round 39 {40} PROGRAMMING 2500
143 Interesting Sequence math Statement D Codeforces Beta Round 39 {40} PROGRAMMING 2600