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>
using namespace std;
vector<int> gr;
void initialize(int n){
gr.resize(n);
for (int i=0; i<n; i++) gr[i] = i;
}
int hasEdge(int u, int v){
return !(--gr[max(u,v)]);
}
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