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13674 Tree Cutting binary search dp greedy implementation trees Statement C Codeforces Round 936 (Div. 2) {1946} PROGRAMMING 1500.0 Codeforces Round #936 (Div. 2) Editorial
11420 Rae Taylor and Trees (easy version) binary search data structures dp dsu greedy implementation trees Statement D Codeforces Round 1065 (Div. 3) {2171} PROGRAMMING Codeforces Round 1065 (Div. 3) Editorial