#include "game.h"
#include <bits/stdc++.h>
using namespace std;
int adj[1501][1501];
int par[1501];
unordered_set<int> comps;
int N;
int find_set(int a){
if(a == par[a]) return a;
return par[a] = find_set(par[a]);
}
void merge(int a, int b){
comps.erase(b);
par[b] = a;
adj[a][b] = 1;
adj[b][a] = 1;
for(int i = 0; i < N; i++){
if(i == a) continue;
if(adj[b][i]){
adj[a][i] = 1;
adj[i][a] = 1;
}
}
}
void initialize(int n) {
N = n;
memset(adj, -1, sizeof(adj));
for(int i = 0; i < n; i++){ adj[i][i] = 0; par[i] = i; comps.insert(i);}
}
int hasEdge(int u, int v) {
u = find_set(u);
v = find_set(v);
if(u == v) return 0;
for(int i: comps){
if(adj[i][u] != 0 && adj[i][v] != 0){
adj[u][v] = 0;
adj[v][u] = 0;
return 0;
}
}
merge(u, v);
return 1;
}
