D. Take a Guess-Deltix Round, Summer 2021 (open for everyone, rated, Div. 1 + Div. 2) - 交互 位运算 排序
Problem-D-CodeforcesD.TakeaGuesstimelimitpertest2secondsmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputThisisaninteractivetaskWilliamhasacertainsequenceofintegersa1