#include <bits/stdc++.h> #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); } using namespace std; int degree[10010]; void initialize(int n) { for(int i = 0; i < n; i++)degree[i] = i; } int hasEdge(int u, int v) { int t = max(u, v); if(degree[t] == 1)return 1; degree[t]--; return 0; }