#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define pb push_back
#define SZ(x) ((int)(x).size())
#define all(x) x.begin(), x.end()
#define debug(x) cout << #x << ": " << x << " "
#define nl cout << "\n"
#define rep(i, a, b) for(int i = (a); i <= (b); i++)
#define per(i, a, b) for(int i = (a); i >= (b); i--)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int MAXN = 1e3+100;
int N, deg[MAXN], cnt[MAXN];
void initialize(int n){
N = n;
fill(cnt, cnt + N, N - 1);
}
int hasEdge(int u, int v){
cnt[u]--, cnt[v]--;
if(!deg[u] && !cnt[u]){
deg[u]++, deg[v]++; return 1;
}
if(!deg[v] && !cnt[v]){
deg[u]++, deg[v]++; return 1;
}
return 0;
}
