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
7136 A Lot of Games dfs and similar dp games implementation strings trees Statement B Codeforces Round 260 (Div. 1) {455} PROGRAMMING Codeforces Round #260 — Editorial 2100
1084 Cookies binary search data structures dfs and similar dp games trees Statement F Codeforces Round 530 (Div. 2) {1099} PROGRAMMING E 2300
271 Star Trek *special combinatorics dfs and similar dp games graphs matrices trees Statement C Central-European Olympiad in Informatics, CEOI 2020, Day 1 (IOI, Unofficial Mirror Contest, Unrated) {1402} PROGRAMMING Editorial
8355 Tree Tag dfs and similar dp games trees Statement B Codeforces Round 668 (Div. 1) {1404} PROGRAMMING 1000.0 Codeforces Round #668 Editorial
1105 Christmas Game data structures dfs and similar dp games math trees Statement F CodeCraft-21 and Codeforces Round 711 (Div. 2) {1498} PROGRAMMING 3000.0 CodeCraft-21 and Codeforces Round #711 (Div. 2) Editorial
3303 Treelabeling bitmasks constructive algorithms dfs and similar games graphs greedy trees Statement D Codeforces Round 754 (Div. 2) {1605} PROGRAMMING 2000.0 tutorial 2100
1077 Christmas Chocolates dfs and similar dp games graphs implementation math number theory shortest paths trees Statement E Codeforces Round 761 (Div. 2) {1617} PROGRAMMING 3000.0 Editorial for Codeforces Round #761 (Div. 2)
259 Tree and Permutation Game dfs and similar games trees Statement F Codeforces Round 782 (Div. 2) {1659} PROGRAMMING 3000.0 Codeforces Round #782 (Div. 2) Editorial
4562 Game on Tree (Medium) dfs and similar dp games trees Statement C2 Helvetic Coding Contest 2024 online mirror (teams allowed, unrated) {1970} PROGRAMMING Helvetic Coding Contest 2024 Editorial 1700
2541 Game on Tree (Hard) dfs and similar dp games trees Statement C3 Helvetic Coding Contest 2024 online mirror (teams allowed, unrated) {1970} PROGRAMMING Helvetic Coding Contest 2024 Editorial 1900
4591 Resourceful Caterpillar Sequence dfs and similar dp games graphs implementation trees Statement E Good Bye 2024: 2025 is NEAR {2053} PROGRAMMING 2000.0 Good Bye 2024: 2025 is NEAR Editorial
468 The Game (Hard Version) data structures dfs and similar games graphs trees Statement E2 Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2) {2062} PROGRAMMING 2500.0 Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2) Editorial
4421 The Game (Easy Version) dfs and similar games graphs trees Statement E1 Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2) {2062} PROGRAMMING 1500.0 Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2) Editorial
1503 Jerry and Tom data structures dfs and similar games graphs greedy trees Statement C Codeforces Round 1077 (Div. 1) {2187} PROGRAMMING 1750.0 Codeforces Round 1077 (Div. 1, Div. 2) Editorial
2308 Boxed Like a Fish dfs and similar dp games trees Statement D Codeforces Round 1085 (Div. 1 + Div. 2) {2207} PROGRAMMING 2250.0 Codeforces Round 1085 (Div. 1 + Div. 2) Editorial
521 Game on Growing Tree binary search dfs and similar dp games trees Statement F Educational Codeforces Round 190 (Rated for Div. 2) {2230} PROGRAMMING Educational Codeforces Round 190 — Editorial
1004 Tom and Jerry dfs and similar dsu games trees Statement E Spectral::Cup 2026 Round 3 (Codeforces Round 1110, Div. 1 + Div. 2) {2245} PROGRAMMING 2500.0 Spectral::Cup 2026 Round 3 (Codeforces Round 1110, Div. 1 + Div. 2) Editorial