摘要: #include<cstdio> #include<iostream> #include<algorithm> using namespace std; int total[500005]; int n,m; int lowbit(int x) { return(~x+1)&x; } void ad 阅读全文
posted @ 2021-04-02 18:42 loliconsk 阅读(49) 评论(0) 推荐(0)