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

const int MIN_N = 2;
const int MAX_N = 5000;
const int MIN_A = 0;
const int MAX_A = 2;

signed main(int argc,char* argv[]){
  registerValidation(argc, argv);
  int N = inf.readInt(MIN_N, MAX_N, "N");
  inf.readEoln();
  for(int i = 0; i < N; i++){
    inf.readInt(MIN_A, MAX_A, "A");
    if(i < N - 1)inf.readSpace();
    else inf.readEoln();
  }
  inf.readEof();
  return 0;
}