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61809 Two Buttons dfs and similar graphs greedy implementation math shortest paths Statement B Codeforces Round 295 (Div. 2) {520} PROGRAMMING Codeforces Round #295 Editorial (now with bonuses!) 1400
7492 Lakes in Berland dfs and similar dsu graphs greedy implementation Statement D Codeforces Round 375 (Div. 2) {723} PROGRAMMING 1600
994 Vus the Cossack and a Graph dfs and similar graphs greedy implementation Statement F Codeforces Round 571 (Div. 2) {1186} PROGRAMMING E 2300
3013 Unstable String Sort data structures dfs and similar dsu graphs greedy implementation strings Statement F Codeforces Round 582 (Div. 3) {1213} PROGRAMMING Codeforces Round #582 (Div. 3) Editorial 2400
20687 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
6902 Captain Flint and Treasure data structures dfs and similar dp graphs greedy implementation trees Statement D Codeforces Round 660 (Div. 2) {1388} PROGRAMMING 2000.0 Codeforces Round #660 Editorial 2000
15386 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
2289 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
4843 The Strongest Build data structures dfs and similar graphs greedy hashing implementation shortest paths Statement D Educational Codeforces Round 114 (Rated for Div. 2) {1574} PROGRAMMING 95188
9938 The Third Letter dfs and similar graphs greedy implementation Statement H Codeforces Round 886 (Div. 4) {1850} PROGRAMMING Codeforces Round #886 (Div. 4) Editorial
6863 Cyclic Operations constructive algorithms dfs and similar graphs greedy implementation Statement D Codeforces Round 897 (Div. 2) {1867} PROGRAMMING 2000.0
2323 Lights constructive algorithms dfs and similar graphs greedy implementation Statement G Codeforces Round 913 (Div. 3) {1907} PROGRAMMING Codeforces Round 913 (Div. 3) Editorial
1095 Caterpillar on a Tree binary search dfs and similar graphs greedy implementation trees Statement F Codeforces Round 922 (Div. 2) {1918} PROGRAMMING 3000.0 Codeforces Round #922 (Div. 2) Editorial
4506 Vlad and Trouble at MIT dfs and similar dp flows graphs greedy implementation trees Statement G Codeforces Round 928 (Div. 4) {1926} PROGRAMMING 126132
4627 Turtle and a MEX Problem (Hard Version) dfs and similar dp graphs greedy implementation Statement D2 Codeforces Round 968 (Div. 2) {2003} PROGRAMMING 1250.0 sol-zh.pdf
3724 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
16043 Disappearing Permutation dfs and similar dsu graphs greedy implementation Statement C Educational Codeforces Round 177 (Rated for Div. 2) {2086} PROGRAMMING Educational Codeforces Round 177 Editorial