#include <iostream>
#include <algorithm>
using namespace std;

int main(){
  int N;
  cin >> N;
  int input[5];
  input[4] = 11;
  string str;
  bool isguess[10];
  for(int i = 0; i < 10; i++)
    isguess[i] = true;

  while(N--){
    cin >> input[0] >> input[1] >> input[2] >> input[3] >> str;
    if(str == "YES"){
      int itr = 0;
      sort(input, input + 4);
      for(int i = 0; i < 10; i++){
        if(input[itr] == i)
          itr++;
        else{
          isguess[i] = false;
        }
      }
    } else {
      for(int i = 0; i < 4; i++)
        isguess[input[i]] = false;
    }
  }
  for(int i = 0; i < 10; i++){
    if(isguess[i] == true)
      cout << i << endl;
  }
}