#include "testlib.h"
using namespace std;

const int MIN_N = 3;
const int MAX_N = 200'000;
const int MIN_A = 0;
const int MAX_A = 1;

int main() {
    registerValidation();

    int N = inf.readInt(MIN_N,MAX_N);
    inf.readEoln();
    
    for(int i = 0; i < N; i++){
        inf.readInt(MIN_A, MAX_A);
        if(i != N - 1){
            inf.readSpace();
        }else{
            inf.readEoln();
        }
    }
    inf.readEof();
}