#include<iostream>
#include<vector>

//#include<bits/stdc++.h>
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 100000000000;

using namespace std;

int main() {
  int n;
  int target=0;
  std::vector<int> dp(10);
  cin>>n;
  REP(i,n){
    std::vector<int> num(4);
    REP(j,4){
      cin>>num[j];
    }
    string R;
    cin>>R;
    if(R=="YES"){
      REP(j,4){
        dp[num[j]]++;
        target++;
      }
    }
    else{
      REP(j,4){
        dp[num[j]]--;
      }
    }
  }
  REP(i,10){
    if(dp[i]==target){print(i);}
  }
}