摘要: code: #include <bits/stdc++.h> #define N 200009 #define ll long long #define setIO(s) freopen(s".in","r",stdin) using namespace std; ll Sum[N]; int n, 阅读全文
posted @ 2019-12-06 20:14 EM-LGH 阅读(172) 评论(0) 推荐(0) 编辑