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531 Half-decay tree data structures divide and conquer dp math probabilities Statement D Codeforces Beta Round 62 {68} PROGRAMMING 2400
1614 Ray in the tube data structures divide and conquer dp math Statement F Codeforces Round 509 (Div. 2) {1041} PROGRAMMING Codeforces Round #509 (Div. 2) Editorial 2400
1655 Bracket Cost binary search data structures divide and conquer dp greedy strings Statement E CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!) {1750} PROGRAMMING 2250.0 CodeTON Round 3 (Div. 1 + Div. 2) Editorial
2105 Omsk Metro (hard version) data structures dfs and similar divide and conquer dp implementation math trees Statement F2 Codeforces Round 881 (Div. 3) {1843} PROGRAMMING Codeforces Round #881 (Div. 3) Editorial
2277 Eliminating Balls With Merging (Easy Version) binary search brute force data structures divide and conquer dp greedy math Statement E1 Codeforces Round 965 (Div. 2) {1998} PROGRAMMING 1750.0 Video Tutorial
1307 Kevin and Math Class brute force data structures divide and conquer dp math trees two pointers Statement F Codeforces Global Round 28 {2048} PROGRAMMING 2000.0 Tutorial
597 Another Folding Strip combinatorics data structures divide and conquer dp math sortings Statement E Codeforces Round 1008 (Div. 1) {2077} PROGRAMMING 2250.0 Codeforces Round 1008 (Div. 1, Div. 2) Editorial