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37 Bowser's Castle (Medium Version) constructive algorithms divide and conquer interactive trees two pointers Statement H2 Codeforces Round 1085 (Div. 1 + Div. 2) {2207} PROGRAMMING 1000.0 Codeforces Round 1085 (Div. 1 + Div. 2) Editorial
53 Bowser's Castle (Hard Version) constructive algorithms divide and conquer interactive trees two pointers Statement H3 Codeforces Round 1085 (Div. 1 + Div. 2) {2207} PROGRAMMING 1500.0 Codeforces Round 1085 (Div. 1 + Div. 2) Editorial