#include "game.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<int> > v;
vector<int> pa, sz;
int N;
int fin(int i)
{
if (pa[i] == i)
return i;
pa[i] = fin(pa[i]);
return pa[i];
}
void mer(int a, int b)
{
a = fin(a);
b = fin(b);
if (sz[a] > sz[b])
swap(a, b);
pa[a] = b;
sz[b] += sz[a];
for (int i = 0; i < N; i++)
{
if (pa[i] != i || i == a || i == b)
continue;
v[i][b] += v[i][a];
v[b][i] += v[a][i];
}
}
void initialize(int n)
{
int i, j;
N = n;
pa.resize(n);
sz.resize(n);
v.resize(n);
for (i = 0; i < n; i++)
{
pa[i] = i;
sz[i] = 1;
v[i].resize(n);
for (j = 0; j < n; j++)
v[i][j] = 1;
}
}
int hasEdge(int a, int b)
{
a = fin(a);
b = fin(b);
if (v[a][b] > 1)
{
v[a][b]--;
v[b][a]--;
return 0;
}
mer(a, b);
return 1;
}
