This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
// #pragma once
#include "bits/stdc++.h"
using namespace std;
vector<int>ac;
void initialize(int n)
{
ac.resize(n);
return;
}
int hasEdge(int u, int v)
{
if(++u>++v)swap(u,v);
ac[u]++;
return ac[u]==u;
}
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