摘要: const int mod = 1e9 + 7; struct mint{ mint(){} mint(int _k){ k = _k; } int k; mint & operator = (const int &_k){ k = _k; return *this; } friend mint o 阅读全文
posted @ 2025-01-09 23:11 cbdsopa 阅读(28) 评论(0) 推荐(0)