codeforces 1556D - Take a Guess (构造+bitmasks)

题目链接：https://codeforces.com/blog/entry/94384

重要结论: \(a+b = (a \space or\space b)+(a\space and\space b)\)

posted @ 2021-09-07 23:24  Tartarus_li  阅读(64)  评论(0)    收藏  举报