//Normal

#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

void print(auto a){
  cout << a;
}

void prints(auto a){
  cout << a << " ";
}

void prints(){
  cout << " ";
}

void printl(auto a){
  cout << a << endl;
}

void printl(){
  cout << endl;
}

void fix(int n){
  cout << fixed << setprecision(n);
}

int siz(string s){
  return (int)s.size();
}

int main(){
  int N; cin >> N;
  map<int, int> mp;
  
  for(int i = 0; i < N; i++){
    int A, B, C, D; cin >> A >> B >> C >> D;
    string S; cin >> S;
    bool E;
    S == "YES" ? E = true : E = false;
    
    E ? mp[A]++ : mp[A]--;
    E ? mp[B]++ : mp[B]--;
    E ? mp[C]++ : mp[C]--;
    E ? mp[D]++ : mp[D]--;
  }
  
  int ans = 0, v = mp[0];
  for(int i = 1; i <= 9; i++){
    if(v < mp[i]){
      ans = i;
      v = mp[i];
    }
  }
  
  printl(ans);
  return 0;
}