#include <bits/stdc++.h>
using namespace std;
//#include <atcoder/all>
//using namespace atcoder;
using ll=long long;
using Graph=vector<vector<int>>;
#define MAX 1000000
#define MOD 1000000007
//#define MOD 998244353
#define INF 1000000000
//#define INF 1000000000000000000

int main(){
  int N;
  cin>>N;
  vector<int> A(N),B(N),C(N),D(N);
  vector<string> R(N);
  for(int i=0;i<N;i++){
    cin>>A[i]>>B[i]>>C[i]>>D[i]>>R[i];
  }

  for(int d=0;d<10;d++){
    bool flag=true;
    for(int i=0;i<N;i++){
      if(R[i]=="YES"){
        if(d!=A[i]&&d!=B[i]&&d!=C[i]&&d!=D[i]){
          flag=false;
        }
      }else{
        if(d==A[i]||d==B[i]||d==C[i]||d==D[i]){
          flag=false;
        }
      }
    }
    if(flag){
      cout<<d<<endl;
    }
  }
}