摘要: #include<iostream> #include<cstdio> #include<cstring> #define LL long long #define maxn 1000009 #define N maxn+10 #define M 1000000007 using namespace 阅读全文
posted @ 2017-08-11 19:08 ws_zzy 阅读(313) 评论(2) 推荐(1) 编辑