#include "game.h"
#include <bits/stdc++.h>
using namespace std;
int n;
int pa[1500], sz[1500];
bool Asked[1500][1500];
vector<int> g[1500];
int fp(int u) { return pa[u] = (u == pa[u]) ? u : fp(pa[u]); }
void initialize(int N)
{
n = N;
for (int i=0 ; i<n ; i++)
{
pa[i] = i;
sz[i] = 1;
}
}
int hasEdge(int u, int v)
{
Asked[u][v] = Asked[v][u] = true;
int uu = fp(u), vv = fp(v);
if (uu == vv) return 0;
int cntAsked = 0;
stack<int> s1;
s1.push(uu);
while (!s1.empty())
{
int u = s1.top();
s1.pop();
stack<int> s2;
s2.push(vv);
while (!s2.empty())
{
int v = s2.top();
s2.pop();
if (Asked[u][v]) cntAsked += 1;
for (int x : g[v]) s2.push(x);
}
for (int x : g[u]) s1.push(x);
}
if (cntAsked != sz[uu] * sz[vv]) return 0;
pa[vv] = uu;
sz[uu] += sz[vv];
g[uu].push_back(vv);
return 1;
}
