Kobolds are rat-like, candle-loving cave folk, digging deep beneath the surface for millennia. Today ...

链接：https://ac.nowcoder.com/acm/contest/11255/E 来源：牛客网 题目描述 Bob has a tree with nn nodes and the we ...

Problem Description One day, a zombie came to the Lawn of the Dead, which can be seen as an n×m gri ...

A. R 链接：https://ac.nowcoder.com/acm/contest/23479/A 来源：牛客网 题目描述 小红拿到了一个长度为 nn 的字符串，该字符串仅由大写字母组成 ...