#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
#define REP(i,a,b) for(int i=a;i<b;i++)
#define F first
#define S second
#define PB push_back
#define MP make_pair
ll INF=1e18+10;
ll M=1e9+7;
vi a;
int k=0;
void initialize(int n) {
a.resize(n,n-1);
k=(n*(n-1))/2-(n-1);
}
int hasEdge(int u, int v) {
a[u]--;a[v]--;k--;
if(a[u]==0||a[v]==0){
k++;
return 1;
}
if(k<0)return 1;
return 0;
}
