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 ... 15 16 17 18 19 ... 100 101 102 >

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
935 Fools and Foolproof Roads data structures dfs and similar ds graphs greedy Statement D Codeforces Round 212 (Div. 2) {362} PROGRAMMING 2500
825 Petya and Pipes flows graphs shortest paths Statement E Codeforces Round 212 (Div. 2) {362} PROGRAMMING 2700
10893 Soroban implementation Statement A Codeforces Round 211 (Div. 2) {363} PROGRAMMING 9537 1000
55320 Fence brute force dp Statement B Codeforces Round 211 (Div. 2) {363} PROGRAMMING 9537 1200
13459 Fixing Typos greedy implementation Statement C Codeforces Round 211 (Div. 2) {363} PROGRAMMING 9537 1400
4011 Renting Bikes binary search greedy Statement D Codeforces Round 211 (Div. 2) {363} PROGRAMMING 1800
213 Two Circles brute force data structures implementation Statement E Codeforces Round 211 (Div. 2) {363} PROGRAMMING 2600
4740 Matrix combinatorics data structures implementation Statement A Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 1800
1188 Free Market dp greedy Statement B Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 2300
604 Beautiful Set brute force number theory Statement C Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 2500
2149 Ghd brute force math probabilities Statement D Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 2600
598 Empty Rectangles divide and conquer two pointers Statement E Codeforces Round 213 (Div. 1) {364} PROGRAMMING Codeforces Round #213 Editorial 3000
19120 Good Number implementation Statement A Codeforces Round 213 (Div. 2) {365} PROGRAMMING Codeforces Round #213 Editorial 1100
14644 The Fibonacci Segment implementation Statement B Codeforces Round 213 (Div. 2) {365} PROGRAMMING Codeforces Round #213 Editorial 1200
4558 Dima and Guards implementation Statement A Codeforces Round 214 (Div. 2) {366} PROGRAMMING 1100
6862 Dima and To-do List brute force implementation Statement B Codeforces Round 214 (Div. 2) {366} PROGRAMMING 1200
4971 Dima and Salad dp Statement C Codeforces Round 214 (Div. 2) {366} PROGRAMMING 1900
784 Dima and Magic Guitar brute force implementation math Statement E Codeforces Round 214 (Div. 2) {366} PROGRAMMING 2300
1577 Dima and Trap Graph binary search data structures dfs and similar ds shortest paths two pointers Statement D Codeforces Round 214 (Div. 2) {366} PROGRAMMING 2400
4340 Sereja and Algorithm data structures implementation Statement A Codeforces Round 215 (Div. 1) {367} PROGRAMMING Codeforces Round #215 — tutorial 1500
2484 Sereja ans Anagrams binary search data structures Statement B Codeforces Round 215 (Div. 1) {367} PROGRAMMING Codeforces Round #215 — tutorial 2000
1806 Sereja and the Arrangement of Numbers graphs greedy sortings Statement C Codeforces Round 215 (Div. 1) {367} PROGRAMMING Codeforces Round #215 — tutorial 2200
666 Sereja and Sets bitmasks dfs and similar Statement D Codeforces Round 215 (Div. 1) {367} PROGRAMMING Codeforces Round #215 — tutorial 2400
1169 Sereja and Intervals combinatorics dp Statement E Codeforces Round 215 (Div. 1) {367} PROGRAMMING 2600
43301 Sereja and Suffixes data structures dp Statement B Codeforces Round 215 (Div. 2) {368} PROGRAMMING Codeforces Round #215 — tutorial 1100
7554 Sereja and Coat Rack implementation Statement A Codeforces Round 215 (Div. 2) {368} PROGRAMMING Codeforces Round #215 — tutorial 1100
11172 Valera and Plates greedy implementation Statement A Codeforces Round 216 (Div. 2) {369} PROGRAMMING Editorial Codeforces Round #216 (Div. 2) 1000
6567 Valera and Contest constructive algorithms implementation math Statement B Codeforces Round 216 (Div. 2) {369} PROGRAMMING Editorial Codeforces Round #216 (Div. 2) 1500
10425 Valera and Elections dfs and similar graphs trees Statement C Codeforces Round 216 (Div. 2) {369} PROGRAMMING 1700
1192 Valera and Fools dfs and similar dp graphs shortest paths Statement D Codeforces Round 216 (Div. 2) {369} PROGRAMMING 2300
2263 Valera and Queries binary search data structures Statement E Codeforces Round 216 (Div. 2) {369} PROGRAMMING Editorial Codeforces Round #216 (Div. 2) 2400
10668 Rook, Bishop and King graphs math shortest paths Statement A Codeforces Round 217 (Div. 2) {370} PROGRAMMING Codeforces Round #217 (Div. 2): tutorial 1200
2559 Berland Bingo implementation Statement B Codeforces Round 217 (Div. 2) {370} PROGRAMMING Codeforces Round #217 (Div. 2): tutorial 1300
1597 Mittens constructive algorithms greedy sortings Statement C Codeforces Round 217 (Div. 2) {370} PROGRAMMING 1800
646 Broken Monitor brute force constructive algorithms greedy implementation Statement D Codeforces Round 217 (Div. 2) {370} PROGRAMMING 2100
300 Summer Reading dp greedy Statement E Codeforces Round 217 (Div. 2) {370} PROGRAMMING 2500
6180 K-Periodic Array greedy implementation math Statement A Codeforces Round 218 (Div. 2) {371} PROGRAMMING 1200
11623 Fox Dividing Cheese math number theory Statement B Codeforces Round 218 (Div. 2) {371} PROGRAMMING Codeforces Round #218 (Div. 2): Tutorial 1400
27589 Hamburgers binary search brute force Statement C Codeforces Round 218 (Div. 2) {371} PROGRAMMING 1600
5772 Vessels data structures ds implementation trees Statement D Codeforces Round 218 (Div. 2) {371} PROGRAMMING Codeforces Round #218 (Div. 2): Tutorial 1900
1322 Subway Innovation greedy math two pointers Statement E Codeforces Round 218 (Div. 2) {371} PROGRAMMING 2200
13372 Counting Kangaroos is Fun binary search greedy sortings two pointers Statement A Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 1700
2668 Counting Rectangles is Fun brute force divide and conquer dp Statement B Codeforces Round 219 (Div. 1) {372} PROGRAMMING 2100
4255 Watching Fireworks is Fun data structures dp math Statement C Codeforces Round 219 (Div. 1) {372} PROGRAMMING 2400
998 Choosing Subtree is Fun binary search data structures dfs and similar trees two pointers Statement D Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 2600
176 Drawing Circles is Fun combinatorics geometry Statement E Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 2900
10795 Collecting Beats is Fun implementation Statement A Codeforces Round 219 (Div. 2) {373} PROGRAMMING Codeforces Round #219 editorial 1000
2506 Making Sequences is Fun binary search implementation math Statement B Codeforces Round 219 (Div. 2) {373} PROGRAMMING Codeforces Round #219 editorial 1600
3343 Inna and Nine combinatorics greedy Statement B Codeforces Round 220 (Div. 2) {374} PROGRAMMING Codeforces Round #220 (Div. 2) разбор 1600
2970 Inna and Pink Pony greedy implementation Statement A Codeforces Round 220 (Div. 2) {374} PROGRAMMING 1800
2762 Inna and Dima dfs and similar dp graphs implementation Statement C Codeforces Round 220 (Div. 2) {374} PROGRAMMING Codeforces Round #220 (Div. 2) разбор 2000
894 Inna and Sequence binary search data structures dp trees Statement D Codeforces Round 220 (Div. 2) {374} PROGRAMMING 2300
186 Inna and Babies binary search data structures ds geometry implementation Statement E Codeforces Round 220 (Div. 2) {374} PROGRAMMING Codeforces Round #220 (Div. 2) разбор 2600
5104 Maximum Submatrix 2 data structures dp implementation sortings Statement B Codeforces Round 221 (Div. 1) {375} PROGRAMMING Codeforces Round #221 Tutorial 1800
4912 Divisible by Seven math number theory Statement A Codeforces Round 221 (Div. 1) {375} PROGRAMMING Codeforces Round #221 Tutorial 1800
7105 Tree and Queries data structures dfs and similar trees Statement D Codeforces Round 221 (Div. 1) {375} PROGRAMMING Codeforces Round #221 Tutorial 2400
571 Circling Round Treasures bitmasks shortest paths Statement C Codeforces Round 221 (Div. 1) {375} PROGRAMMING 2600
417 Red and Black Tree dp implementation math Statement E Codeforces Round 221 (Div. 1) {375} PROGRAMMING Codeforces Round #221 Tutorial 3000
9421 Lever implementation math Statement A Codeforces Round 221 (Div. 2) {376} PROGRAMMING Codeforces Round #221 Tutorial 1000
6471 I.O.U. implementation Statement B Codeforces Round 221 (Div. 2) {376} PROGRAMMING 1300
23108 Maze dfs and similar Statement A Codeforces Round 222 (Div. 1) {377} PROGRAMMING Codeforces Round #222 — Problem Analysis 1600
2132 Preparing for the Contest binary search data structures greedy sortings Statement B Codeforces Round 222 (Div. 1) {377} PROGRAMMING 2100
1205 Developing Game data structures Statement D Codeforces Round 222 (Div. 1) {377} PROGRAMMING Codeforces Round #222 — Problem Analysis 2400
1160 Captains Mode bitmasks dp games Statement C Codeforces Round 222 (Div. 1) {377} PROGRAMMING 2400
481 Cookie Clicker dp geometry Statement E Codeforces Round 222 (Div. 1) {377} PROGRAMMING 2700
5319 Semifinals implementation sortings Statement B Codeforces Round 222 (Div. 2) {378} PROGRAMMING Codeforces Round #222 — Problem Analysis 1300
24449 Playing with Dice brute force Statement A Codeforces Round 222 (Div. 2) {378} PROGRAMMING Codeforces Round #222 — Problem Analysis 800
47681 New Year Candles implementation Statement A Good Bye 2013 {379} PROGRAMMING Tutorial Good Bye 2013 1100
7361 New Year Present constructive algorithms implementation Statement B Good Bye 2013 {379} PROGRAMMING 1200
6693 New Year Ratings Change greedy sortings Statement C Good Bye 2013 {379} PROGRAMMING Tutorial Good Bye 2013 1500
1586 New Year Letter bitmasks brute force dp Statement D Good Bye 2013 {379} PROGRAMMING Tutorial Good Bye 2013 2000
2379 New Year Tree data structures divide and conquer trees Statement F Good Bye 2013 {379} PROGRAMMING Tutorial Good Bye 2013 2400
344 New Year Tree Decorations geometry schedules sortings Statement E Good Bye 2013 {379} PROGRAMMING 2500
143 New Year Cactus dp Statement G Good Bye 2013 {379} PROGRAMMING Tutorial Good Bye 2013 3100
2719 Sereja and Prefixes binary search brute force Statement A Codeforces Round 223 (Div. 1) {380} PROGRAMMING 1700
15817 Sereja and Brackets data structures schedules Statement C Codeforces Round 223 (Div. 1) {380} PROGRAMMING 2100
540 Sereja and Tree graphs implementation Statement B Codeforces Round 223 (Div. 1) {380} PROGRAMMING 2500
478 Sereja and Cinema combinatorics math Statement D Codeforces Round 223 (Div. 1) {380} PROGRAMMING Codeforces Round #223 — Tutorial 2500
308 Sereja and Dividing data structures Statement E Codeforces Round 223 (Div. 1) {380} PROGRAMMING Codeforces Round #223 — Tutorial 2600
6869 Sereja and Stairs greedy implementation sortings Statement B Codeforces Round 223 (Div. 2) {381} PROGRAMMING Codeforces Round #223 — Tutorial 1100
69651 Sereja and Dima greedy implementation two pointers Statement A Codeforces Round 223 (Div. 2) {381} PROGRAMMING Codeforces Round #223 — Tutorial 800
12607 Ksenia and Pan Scales greedy implementation Statement A Codeforces Round 224 (Div. 2) {382} PROGRAMMING Codeforces Round #224 (Div. 2) Editorial 1100
8368 Arithmetic Progression implementation sortings Statement C Codeforces Round 224 (Div. 2) {382} PROGRAMMING Codeforces Round #224 (Div. 2) Editorial 1700
1422 Number Busters binary search math Statement B Codeforces Round 224 (Div. 2) {382} PROGRAMMING Codeforces Round #224 (Div. 2) Editorial 2000
689 Ksenia and Pawns dfs and similar graphs implementation trees Statement D Codeforces Round 224 (Div. 2) {382} PROGRAMMING Codeforces Round #224 (Div. 2) Editorial 2300
384 Ksenia and Combinatorics combinatorics dp Statement E Codeforces Round 224 (Div. 2) {382} PROGRAMMING Codeforces Round #224 (Div. 2) Editorial 2600
5326 Milking cows data structures greedy Statement A Codeforces Round 225 (Div. 1) {383} PROGRAMMING Tutorial 1500
705 Volcanoes binary search implementation sortings two pointers Statement B Codeforces Round 225 (Div. 1) {383} PROGRAMMING 2200
3077 Antimatter dp Statement D Codeforces Round 225 (Div. 1) {383} PROGRAMMING Tutorial 2300
6648 Propagating tree data structures dfs and similar trees Statement C Codeforces Round 225 (Div. 1) {383} PROGRAMMING 2400
3234 Vowels combinatorics divide and conquer dp Statement E Codeforces Round 225 (Div. 1) {383} PROGRAMMING Tutorial 2700
3590 Multitasking greedy implementation sortings two pointers Statement B Codeforces Round 225 (Div. 2) {384} PROGRAMMING 1500
16523 Coder implementation Statement A Codeforces Round 225 (Div. 2) {384} PROGRAMMING Codeforces Round #225 — Editorial 800
16637 Bear and Raspberry brute force greedy implementation Statement A Codeforces Round 226 (Div. 2) {385} PROGRAMMING 1100
10074 Bear and Strings brute force greedy implementation math strings Statement B Codeforces Round 226 (Div. 2) {385} PROGRAMMING 1300
9810 Bear and Prime Numbers binary search brute force data structures dp implementation math number theory Statement C Codeforces Round 226 (Div. 2) {385} PROGRAMMING Codeforces Round #226 (Div. 2) — Editorial 1800
816 Bear and Floodlight bitmasks dp geometry Statement D Codeforces Round 226 (Div. 2) {385} PROGRAMMING 2500
593 Bear in the Field math matrices Statement E Codeforces Round 226 (Div. 2) {385} PROGRAMMING 2700
6650 Second-Price Auction implementation Statement A Testing Round 9 {386} PROGRAMMING 1100
2205 Fly, freebies, fly! binary search brute force implementation Statement B Testing Round 9 {386} PROGRAMMING 1500