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3984 Asesino (Easy Version) binary search constructive algorithms implementation interactive Statement D1 Codeforces Round 978 (Div. 2) {2022} PROGRAMMING 1750.0 Codeforces Round 978 (Div 2) Editorial
104 Inter Active (Hard Version) binary search bitmasks constructive algorithms graphs implementation interactive math probabilities Statement G2 Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) {2127} PROGRAMMING 2750.0 Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) Editorial