/* * @Author: NEFU_马家沟老三 * @LastEditTime: 2020-11-16 20:06:23 * @优快云 blog: https://blog.youkuaiyun.com/acm_durante * @E-mail: 1055323152@qq.com * @ProbTitle: */#include <bits/stdc++.h>using namespace std;typedef long long ll;#define rep(i, a, n

#include <bits/stdc++.h>using namespace std;typedef long long ll;#define rep(i, a, n) for (int i = a; i <= n; i++)#define per(i, a, n) for (int i = n; i >= a; i--)#define lowbit(x) ((x) & -(x))#define lson l, mid, rt << 1#defin

#include <bits/stdc++.h>using namespace std;typedef long long ll;#define rep(i, a, n) for (int i = a; i <= n; i++)#define per(i, a, n) for (int i = n; i >= a; i--)#define lowbit(x) ((x) & -(x))#define lson l, mid, rt << 1#defin