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

Solved
Name
Tags
Solutions
Index
Contest
Type
Points
Tutorial
Rating Level
675 Hamming Distance constructive algorithms greedy math matrices Statement C Codeforces Round 122 (Div. 1) {193} PROGRAMMING Editoral Codeforces Round #122 2400
10927 Bear and Strings brute force greedy implementation math strings Statement B Codeforces Round 226 (Div. 2) {385} PROGRAMMING Codeforces Round #226 (Div. 2) — Editorial 1300
24147 Anton and currency you all know greedy math strings Statement B Codeforces Round 288 (Div. 2) {508} PROGRAMMING 16048 1300
10314 Pasha and String constructive algorithms greedy math strings Statement B Codeforces Round 297 (Div. 2) {525} PROGRAMMING Codeforces Round #297 (Div.2) Editorial 1500
2963 Ability To Convert constructive algorithms dp greedy math strings Statement D Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 1900
2233 Kuro and GCD and XOR and SUM binary search bitmasks brute force data structures dp dsu greedy math number theory strings trees Statement D Codeforces Round 482 (Div. 2) {979} PROGRAMMING 1750.0 Codeforces Round #482 (Div. 2) Editorial 2200
4213 Circus brute force greedy math strings Statement B Codeforces Round 545 (Div. 2) {1138} PROGRAMMING Codeforces Round #545 – Editorial 1700
2793 You Are Given a WASD-string... brute force data structures dp greedy implementation math strings Statement C Educational Codeforces Round 70 (Rated for Div. 2) {1202} PROGRAMMING 68972 2100
3418 Kirk and a Binary String (hard version) data structures greedy math strings Statement D2 Codeforces Round 581 (Div. 2) {1204} PROGRAMMING 69244 2100
20844 Even But Not Even greedy math strings Statement A Codeforces Round 616 (Div. 2) {1291} PROGRAMMING 500.0 Codeforces Round #616 Editorial 1000
9950 Ayoub's function binary search combinatorics greedy math strings Statement C Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 1250.0 Codeforces Round #619 (Div. 2) Editorial 1700
21687 Codeforces Subsequences brute force constructive algorithms greedy math strings Statement B Codeforces Global Round 8 {1368} PROGRAMMING 1000.0 Codeforces Global Round 8: editorial
9981 Omkar and Bed Wars constructive algorithms dp greedy math strings Statement D Codeforces Global Round 10 {1392} PROGRAMMING 1500.0 Codeforces Global Round 10 — Editorial
6715 Binary Literature constructive algorithms greedy implementation math strings two pointers Statement A Codeforces Round 715 (Div. 1) {1508} PROGRAMMING 750.0 Codeforces Round #715 Editorial
19600 Make a Power of Two greedy math strings Statement D Codeforces Round 739 (Div. 3) {1560} PROGRAMMING 94009 1300
29833 Make Them Equal brute force greedy math strings Statement C Codeforces Round 747 (Div. 2) {1594} PROGRAMMING 1500.0 95525 1200
18236 Blue-Red Permutation greedy math sortings Statement D Codeforces Round 753 (Div. 3) {1607} PROGRAMMING Codeforces Round #753 (Div. 3) Editorial
7318 BA-String bitmasks brute force dp greedy implementation math shortest paths Statement C Educational Codeforces Round 119 (Rated for Div. 2) {1620} PROGRAMMING 98061
17993 Social Distance greedy math sortings Statement B Codeforces Round 783 (Div. 2) {1668} PROGRAMMING 500.0 Codeforces Round #783 Editorial 900
35285 Most Similar Words brute force greedy implementation implementation math strings Statement C Codeforces Round 790 (Div. 4) {1676} PROGRAMMING Codeforces Round #790 (Div. 4) Editorial
17361 Sum of Substrings brute force constructive algorithms greedy math strings Statement C CodeCraft-22 and Codeforces Round 795 (Div. 2) {1691} PROGRAMMING 1250.0 Editorial for CodeCraft-22 and Codeforces Round #795 (Div. 2)
9575 Equate Multisets constructive algorithms data structures graph matchings greedy math number theory Statement F Codeforces Round 805 (Div. 3) {1702} PROGRAMMING 104763
3527 Fibonacci Strings brute force data structures greedy implementation math number theory Statement B Codeforces Round 814 (Div. 1) {1718} PROGRAMMING 1250.0 Codeforces Round #814 (Div. 1, Div. 2) Editorial
24128 Hall of Fame constructive algorithms greedy math strings Statement A Hello 2023 {1779} PROGRAMMING 500.0
29251 Subsequence Addition (Hard Version) dp greedy implementation math sortings Statement G2 Codeforces Round 859 (Div. 4) {1807} PROGRAMMING 114143
34927 Insert Digit greedy math strings Statement A Codeforces Round 863 (Div. 3) {1811} PROGRAMMING 114788
12545 Making Anti-Palindromes greedy math strings Statement E Codeforces Round 867 (Div. 3) {1822} PROGRAMMING Codeforces Round #867 (Div. 3) Editorial
4354 Unique Palindromes binary search constructive algorithms greedy math strings Statement D Codeforces Round 868 (Div. 2) {1823} PROGRAMMING 2000.0 115465
9218 Ranom Numbers brute force dp greedy math strings Statement C Educational Codeforces Round 150 (Rated for Div. 2) {1841} PROGRAMMING 117262
6455 Omsk Metro (simple version) data structures dfs and similar dp greedy math trees Statement F1 Codeforces Round 881 (Div. 3) {1843} PROGRAMMING Codeforces Round #881 (Div. 3) Editorial
7750 Lisa and the Martians bitmasks data structures greedy math sortings strings trees Statement F Codeforces Round 888 (Div. 3) {1851} PROGRAMMING 118667
23435 Removal of Unattractive Pairs constructive algorithms greedy math strings Statement C Codeforces Round 913 (Div. 3) {1907} PROGRAMMING Codeforces Round 913 (Div. 3) Editorial
2221 Modular Sequence constructive algorithms dp greedy implementation math number theory Statement E Codeforces Round 924 (Div. 2) {1928} PROGRAMMING 2250.0 Codeforces Round 924 Editorial
21274 378QAQ and Mocha's Array brute force greedy math sortings Statement B Codeforces Round 947 (Div. 1 + Div. 2) {1975} PROGRAMMING 500.0 editorial_zh.pdf 1000
348 Zimpha Fan Club fft greedy math strings Statement G Codeforces Round 947 (Div. 1 + Div. 2) {1975} PROGRAMMING 3000.0 editorial_zh.pdf 3000
17635 GCD-sequence greedy implementation math math number theory number theory Statement D Codeforces Round 950 (Div. 3) {1980} PROGRAMMING 130135
27641 Soccer greedy implementation math sortings Statement A Codeforces Round 955 (Div. 2, with prizes from NEAR!) {1982} PROGRAMMING 500.0 130839
11453 Swap Dilemma constructive algorithms divide and conquer greedy math sortings Statement D Codeforces Round 956 (Div. 2) and ByteRace 2024 {1983} PROGRAMMING 1750.0
2809 Triangle Formation brute force greedy math sortings Statement F Pinely Round 4 (Div. 1 + Div. 2) {1991} PROGRAMMING 2500.0 Video Tutorial
7690 Funny Game constructive algorithms dsu graphs greedy math number theory Statement D Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2) {1994} PROGRAMMING 2000.0 Video Tutorial
1399 C+K+S brute force constructive algorithms dfs and similar graphs greedy hashing math strings Statement C Codeforces Round 980 (Div. 1) {2023} PROGRAMMING 1500.0 135341
19360 Digital string maximization brute force greedy math strings Statement D Codeforces Round 991 (Div. 3) {2050} PROGRAMMING Разбор Codeforces Round 991 (Div. 3)
437 Andryusha and CCB brute force constructive algorithms greedy math number theory strings Statement F Codeforces Round 1014 (Div. 2) {2092} PROGRAMMING 3000.0 Codeforces Round #1014 (Div. 2) Editorial
31034 Not Quite a Palindromic String greedy greedy math math Statement B Codeforces Round 1027 (Div. 3) {2114} PROGRAMMING 143268
4812 Unjust Binary Life binary search binary search data structures greedy greedy math two pointers Statement F Codeforces Round 1042 (Div. 3) {2131} PROGRAMMING Codeforces Round 1042 (Div. 3) Editorial
2052 Little String (Hard Version) binary search combinatorics dp greedy math number theory Statement D2 Codeforces Round 1075 (Div. 2) {2189} PROGRAMMING 750.0 Codeforces Round 1075 (Div. 2) Editorial
882 Majority Wins? dp greedy math strings Statement E Codeforces Round 1075 (Div. 2) {2189} PROGRAMMING 2500.0 Codeforces Round 1075 (Div. 2) Editorial