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1135 Catch the Mole(Easy Version) binary search constructive algorithms data structures interactive trees Statement E1 Codeforces Round 960 (Div. 2) {1990} PROGRAMMING 2000.0 Video Tutorial
6175 Genokraken binary search constructive algorithms data structures graphs interactive trees two pointers Statement D Codeforces Round 983 (Div. 2) {2032} PROGRAMMING 1750.0 Codeforces Round 983 (Div. 2) Editorial