#include<iostream>
#include<vector>
#include<algorithm>
#include<cstring>
#include<cstdio>
#include<cmath>
#include<cstdlib>
#include<ctime>
#include<queue>
#include<set>
using namespace std;
typedef long long LL;
const int N=4e5;
int gi() {
int w=0;bool q=1;char c=getchar();
while ((c<‘0’||c>’9′) && c!=’-‘) c=getchar();
if...