#include"testlib.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;

const ll Nmin = 2, Nmax = 5'000;

int main(){
    registerValidation();

    ll N = inf.readLong(Nmin, Nmax);
    inf.readEoln();
    for (ll i = 2; i <= N; i++){
        if (i != 2){
            inf.readSpace();
        }
        inf.readLong(1LL, i-1);
    }
    inf.readEoln();

    inf.readEof();
}