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
198 Suns and Rays constructive algorithms dfs and similar implementation Statement F3 ABBYY Cup 3.0 {316} PROGRAMMING ABBYY Cup 3.0. Solutions 2600
12049 Valera and Tubes constructive algorithms dfs and similar implementation Statement C Codeforces Round 252 (Div. 2) {441} PROGRAMMING 12615 1500
1037 Complete Mirror constructive algorithms dfs and similar dp hashing implementation trees Statement D Codeforces Round 566 (Div. 2) {1182} PROGRAMMING 67614 2500
1324 Add on a Tree: Revolution constructive algorithms dfs and similar implementation trees Statement A2 Codeforces Round 572 (Div. 1) {1188} PROGRAMMING Editorial of Codeforces Round #572 2500
3653 Nash Matrix constructive algorithms dfs and similar graphs implementation Statement D CodeCraft-20 (Div. 2) {1316} PROGRAMMING 1750.0 Codecraft-20 (Div.2) Editorial 2000
5059 Ehab's Last Corollary constructive algorithms data structures dfs and similar dp graphs implementation trees Statement D Codeforces Round 649 (Div. 2) {1364} PROGRAMMING 2000.0 Codeforces round #649 editorial 2100
21251 Solve The Maze constructive algorithms dfs and similar dsu graphs greedy implementation shortest paths Statement D Codeforces Round 648 (Div. 2) {1365} PROGRAMMING 1500.0 Editorial — Codeforces Round #648 1700
15541 Minimum Ties brute force constructive algorithms dfs and similar graphs greedy implementation math Statement C Educational Codeforces Round 104 (Rated for Div. 2) {1487} PROGRAMMING 87873
1316 Almost Fault-Tolerant Database brute force constructive algorithms dfs and similar greedy implementation Statement E Codeforces Round 704 (Div. 2) {1492} PROGRAMMING 3000.0 Codeforces Round #704 Editorial
2371 Nastia Plays with a Tree constructive algorithms data structures dfs and similar dp flows graphs greedy implementation trees Statement D Codeforces Round 720 (Div. 2) {1521} PROGRAMMING 2250.0 90477
886 One-Four Overload 2-sat constructive algorithms dfs and similar geometry graphs implementation Statement F Codeforces Round 742 (Div. 2) {1567} PROGRAMMING 2750.0 Codeforces Round #742 Editorial
715 Mashtali: a Space Oddysey constructive algorithms dfs and similar graphs implementation Statement F Codeforces Global Round 17 {1610} PROGRAMMING 2750.0 Codeforces Global Round 17 Editorial
4494 Weight the Tree constructive algorithms dfs and similar dp implementation trees Statement D Codeforces Round 774 (Div. 2) {1646} PROGRAMMING 2000.0 Codeforces Round #774 (Div. 2) Editorial 2000
1476 Coloring brute force combinatorics constructive algorithms dfs and similar dp dsu graphs implementation Statement E Educational Codeforces Round 130 (Rated for Div. 2) {1697} PROGRAMMING 103835
6941 Cyclic Operations constructive algorithms dfs and similar graphs greedy implementation Statement D Codeforces Round 897 (Div. 2) {1867} PROGRAMMING 2000.0
2693 Transitive Graph constructive algorithms dfs and similar dp graphs implementation Statement E Codeforces Round 911 (Div. 2) {1900} PROGRAMMING 2250.0 Codeforces Round 911 (Div. 2) Editorial
2401 Lights constructive algorithms dfs and similar graphs greedy implementation Statement G Codeforces Round 913 (Div. 3) {1907} PROGRAMMING Codeforces Round 913 (Div. 3) Editorial
2135 Vlad and Avoiding X bitmasks brute force constructive algorithms dfs and similar dp implementation Statement F Codeforces Round 928 (Div. 4) {1926} PROGRAMMING 126132
5170 DFS Checker (Easy Version) constructive algorithms data structures dfs and similar hashing implementation Statement D1 EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) {2002} PROGRAMMING 1250.0 EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial
2924 DFS Checker (Hard Version) constructive algorithms data structures dfs and similar hashing implementation trees Statement D2 EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) {2002} PROGRAMMING 1250.0 EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial
3814 Alice's Adventures in Cards constructive algorithms data structures dfs and similar dp graphs greedy implementation shortest paths Statement D Codeforces Round 986 (Div. 2) {2028} PROGRAMMING 1750.0 Codeforces Round 986 (Div. 2) Editorial
9327 Trapped in the Witch's Labyrinth constructive algorithms dfs and similar graphs implementation Statement C Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2) {2034} PROGRAMMING 1500.0 Rayan 2024 Selection Round Editorial
4053 Local Construction constructive algorithms dfs and similar graphs implementation two pointers Statement D Codeforces Round 1019 (Div. 2) {2103} PROGRAMMING 2000.0 142149
917 Spruce Dispute constructive algorithms dfs and similar graphs implementation shortest paths trees Statement E Codeforces Round 1022 (Div. 2) {2108} PROGRAMMING 2750.0 Codeforces Round 1022 Editorial
2566 Tree Coloring (Hard Version) constructive algorithms data structures dfs and similar greedy implementation trees Statement D2 Hello 2026 {2183} PROGRAMMING 2000.0
1229 Construct an Array (Hard Version) 2-sat constructive algorithms dfs and similar implementation Statement D2 Spectral::Cup 2026 Round 3 (Codeforces Round 1110, Div. 1 + Div. 2) {2245} PROGRAMMING 1000.0