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10240 SlavicG's Favorite Problem bitmasks brute force constructive algorithms data structures dfs and similar graphs greedy Statement G Codeforces Round 835 (Div. 4) {1760} PROGRAMMING 109348
4627 Li Hua and Tree brute force data structures dfs and similar dp implementation trees Statement D Codeforces Round 864 (Div. 2) {1797} PROGRAMMING 1750.0 Codeforces Round 864 (Div. 2) Editorial
3427 Tree Master brute force data structures dfs and similar hashing trees Statement E Codeforces Round 858 (Div. 2) {1806} PROGRAMMING 2250.0 Codeforces Round #858 (Div. 2) Editorial
3896 Monsters brute force data structures dfs and similar dsu graphs implementation trees Statement E CodeTON Round 4 (Div. 1 + Div. 2, Rated, Prizes!) {1810} PROGRAMMING 2000.0 Editorial of CodeTON Round 4 (Div. 1 + Div. 2, Rated, Prizes!)
1537 Rollbacks (Easy Version) brute force data structures dfs and similar trees Statement E1 Codeforces Round 893 (Div. 2) {1858} PROGRAMMING 1750.0 Codeforces Round #893 (Div. 2) Editorial 2500
2632 Happy Life in University brute force data structures dfs and similar dp implementation trees Statement E Good Bye 2023 {1916} PROGRAMMING 2000.0
4333 Iris and the Tree brute force data structures dfs and similar dsu math trees Statement B Codeforces Round 969 (Div. 1) {2006} PROGRAMMING 1250.0 Tutorial
9526 Tree Pruning brute force data structures dfs and similar greedy sortings trees Statement C Codeforces Round 975 (Div. 1) {2018} PROGRAMMING 750.0 Editorial of Codeforces Round 975 (Div. 1, Div. 2)
3770 Shorten the Array binary search brute force data structures dfs and similar greedy strings trees two pointers Statement G Codeforces Round 1016 (Div. 3) {2093} PROGRAMMING Codeforces Round 1016 (Div. 3) Editorial
565 23 Rises Again brute force data structures dfs and similar dp flows graphs implementation probabilities trees Statement H Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) {2127} PROGRAMMING 4000.0 Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) Editorial