摘要: #include<bits/stdc++.h> #include<iostream> using namespace std; typedef long long ll; int dir[4][2]={{1,0},{-1,0},{0,1},{0,-1}}; ll mod=19260817; char 阅读全文
posted @ 2021-09-07 23:23 旅玖旅玖 阅读(28) 评论(0) 推荐(0) 编辑