#include "game.h"
#include <bits/stdc++.h>
using namespace std;
int vis[1500][1500];
struct UF {
vector<vector<int>> vs;
vector<int> par;
void build(int n) {
vs.resize(n);
par.resize(n);
for (int i = 0; i < n; i++) {
vs[i].push_back(i);
par[i] = i;
}
}
bool unite(int u, int v) {
if (par[u] == par[v]) {
vis[u][v] = 1;
vis[v][u] = 1;
return false;
}
int tu = u, tv = v;
u = par[tu];
v = par[tv];
int su = vs[u].size(), sv = vs[v].size();
if (su < sv) {
swap(u, v);
swap(su, sv);
}
int co = 0;
for (int i = 0; i < su; i++) {
for (int j = 0; j < sv; j++) {
if (vis[vs[u][i]][vs[v][j]]) {
co++;
}
}
}
vis[tu][tv] = 1;
vis[tv][tu] = 1;
if (co + 1 == su * sv) {
for (auto e : vs[v]) {
vs[u].push_back(e);
par[e] = u;
}
return true;
}
return false;
}
};
UF uf;
void initialize(int n) { uf.build(n); }
int hasEdge(int u, int v) {
if (uf.unite(u, v)) {
return 1;
} else {
return 0;
}
}
