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

int main(){
  int N;
  cin >> N;
  vector<vector<int>> Num(N,vector<int>(4));
  vector<string> BOOL(N);
  for(int i=0;i<N;i++){
    for(int j=0;j<4;j++) cin >> Num[i][j];
    cin >> BOOL[i];
  }
  for(int i=0;i<10;i++){
    bool flag = true;
    for(int j=0;j<N;j++){
      bool exist;
      bool there = false;
      if(BOOL[j] == "YES") exist = true;
      else exist  = false;
      for(int k=0;k<4;k++){
        if(Num[j][k] == i && exist == false){
          flag = false;
          break;
        }
        if(Num[j][k] == i) there = true;
      }
      if(!there && exist) flag = false;
    }
    if(flag) cout << i << endl;
  }
}