摘要：
思路：减法思想http://codeforces.com/problemset/problem/369/E//#pragma comment(linker, "/STACK:102400000")#include#include#include#include#include#include#include#include#include#include#include#include#define tree int o,int l,int r#define lson o0) { ans+=c[x]; x-=(x&-x); } return ans... 阅读全文
