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1086 New Year and the Acquaintance Estimation binary search data structures graphs greedy implementation math sortings Statement E Good Bye 2018 {1091} PROGRAMMING Editorial 2400
930 Traveling in Berland binary search data structures graphs greedy implementation Statement F Educational Codeforces Round 145 (Rated for Div. 2) {1809} PROGRAMMING 114300
2752 Locked Out binary search data structures dp graphs greedy implementation two pointers Statement D Pinely Round 5 (Div. 1 + Div. 2) {2161} PROGRAMMING 2250.0