This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "game.h"
#include <bits/stdc++.h>
using namespace std;
struct UF{
int n,par[1505],rs[1505];
void ini(int x,int v){
n=x;
for(int i=0;i<n;i++){
par[i]=i;
if(i==v)rs[i]=0;
else rs[i]=1;
}
}
int find(int x){
if(par[x]==x)return x;
return par[x]=find(par[x]);
}
void unit(int v,int u){
v=find(v);
u=find(u);
rs[v]+=rs[u];
par[u]=v;
}
};
int n,par[1505];
UF p[1505];
int find(int x){
if(par[x]==x)return x;
return par[x]=find(par[x]);
}
void unit(int v,int u){
v=find(v);
u=find(u);
for(int i=0;i<n;i++)p[v].rs[i]+=p[u].rs[i];
par[u]=v;
}
void initialize(int N) {
n=N;
for(int i=0;i<n;i++)par[i]=i,p[i].ini(n,i);
}
int hasEdge(int u, int v) {
u=find(u);
v=find(v);
if(u==v)return 1;
if(p[u].rs[v]>0)return 0;
else{
for(int i=0;i<n;i++)p[i].unit(v,u);
unit(v,u);
return 1;
}
}
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