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5617 Choosing flowers binary search data structures greedy math sortings two pointers Statement C Codeforces Round 657 (Div. 2) {1379} PROGRAMMING 1250.0 Codeforces Round #657 Editorial 2000
8769 Bouquet (Hard Version) binary search data structures greedy math sortings two pointers Statement B2 Codeforces Round 961 (Div. 2) {1995} PROGRAMMING 500.0 Video Tutorial