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4946 Binary Subsequence Rotation binary search data structures dp greedy implementation Statement E Codeforces Round 651 (Div. 2) {1370} PROGRAMMING 2500.0 Editorial — Codeforces Round #651
1565 MinimizOR binary search bitmasks data structures dp greedy implementation Statement E Codeforces Round 781 (Div. 2) {1665} PROGRAMMING 2250.0 Codeforces Round #781 (Div. 2) Editorial
793 Traveling in Berland binary search data structures graphs greedy implementation Statement F Educational Codeforces Round 145 (Rated for Div. 2) {1809} PROGRAMMING 114300
2264 Editorial for Two binary search data structures greedy implementation Statement F Educational Codeforces Round 149 (Rated for Div. 2) {1837} PROGRAMMING 116752