This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
int cnt[2000];
void initialize(int n) {
for(int i=1;i<=n;i++) cnt[i] = i;
}
int hasEdge(int u, int v) {
if(u > v) u ^= v, v ^= u, u ^= v;
if(--cnt[v] == 1) return 1;
return 0;
}
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