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#include<bits/stdc++.h>
#define eps 1e-9
#define fi first
#define se second
#define ls (p<<1)
#define rs (p<<1|1)
#define pb push_back
#define mset multiset
#define pf push_front
#define mpk make_pair
#define int long long
#define db long double
#define lbt(x) (x&(-x))
#define pii pair<int,int>
#define umap unordered_map
#define m(a) memset(a,0,sizeof(a))
#define m127(a) memset(a,0x3f,sizeof(a))
#define m128(a) memset(a,-0x3f,sizeof(a))
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
using namespace std;
const int N=5e5+10;
int n,m,k,T,a[N];
vector<int> g[N];
signed main(){
	//ios::sync_with_stdio(0);
	//cin.tie(0),cout.tie(0);
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);

	return 0;
}