摘要: #include<bits/stdc++.h> using namespace std; #define ll long long #define ls k<<1 #define rs k<<1|1 struct tree { ll le,ri,sum,lz; } t[100100<<2]; inl 阅读全文
posted @ 2019-05-23 19:11 david_alwal 阅读(91) 评论(3) 推荐(1) 编辑