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

const ll N_min = 2;
const ll N_max = 200'000;
const ll C_min = 1;
const ll C_max = 9;

int main() {
	registerValidation();
	ll N = inf.readLong(N_min, N_max);
	inf.readEoln();
	for (int i = 0; i < N; i++) {
		ll c = inf.readLong(C_min, C_max);
		if (i < N - 1) inf.readSpace();
	}
	inf.readEoln();
	inf.readEof();
}