#include "game.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
typedef tuple<int,int,int> tii;
typedef vector<ll> li;
typedef vector<li> lii;
#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
#define LSOne(s) ((s)&(-s))
ll INF=1e18+10;
int inf=1e9+10;
ll M=1e9+7;
int n;
vector<set<int>> a;
vi p;
void initialize(int N) {
n=N;
a.resize(n);p.resize(n);
REP(i,0,n)REP(j,0,i)a[i].insert(j);
REP(i,1,n)p[i]=i-1;
p[0]=0;
}
int hasEdge(int u, int v) {
if(u<v)swap(u,v);
if(p[u]!=v){
a[u].erase(v);
return 0;
}
for(auto k:a[u])if(k!=v){
p[u]=k;
a[u].erase(v);
return 0;
}
return 1;
}
