#include "game.h"
#include <algorithm>
using namespace std;
const int N = 1502;
int ata[N], C;
int tap(int x){
if (ata[x] == x)
return ata[x];
return ata[x] = tap(ata[x]);
}
void merge(int x, int y){
if ((x=tap(x)) == (y=tap(y)))
return;
ata[y] = x;
}
bool is_connected(int x, int y){
return (tap(x) == tap(y));
}
void initialize(int n) {
C = n;
for (int i = 0; i < n; i++)
ata[i] = i;
}
int hasEdge(int u, int v) {
if (!is_connected(u, v)){
if (C == 2)
return 0;
else{
merge(u, v);
C -= 1;
return 1;
}
}
return 0;
}
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