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<iostream>
#include<vector>
#include<algorithm>
using namespace std;
vector<int> c;
void initialize(int n) {
c.resize(n);
}
int hasEdge(int u, int v) {
if (u>v) swap(u,v);
if (++c[v]==v) return 1;
return 0;
}
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