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2576 An overnight dance in discotheque dfs and similar dp geometry greedy trees Statement D Codeforces Round 418 (Div. 2) {814} PROGRAMMING Codeforces Round #418 (Div. 2) Editorial 2000
108 Spiderweb Trees dp geometry trees Statement G Codeforces Global Round 7 {1326} PROGRAMMING 4000.0 74961 3600
661 Tree Queries binary search data structures dp dsu geometry trees Statement F Educational Codeforces Round 116 (Rated for Div. 2) {1606} PROGRAMMING 96454
558 Keen Tree Calculation binary search dp geometry trees Statement K COMPFEST 15 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1866} PROGRAMMING COMPFEST 15 Preliminary — Editorial