#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    int n, max1 = -1, ind = -1;
    cin >> n;
    vector<int> num(10);
    for (int i = 0; i < n; i++){
        vector<int> ipt(4);
        string s;
        for (int k = 0; k < 4; k++) cin >> ipt[k];
        cin >> s;
        for (int j = 0; j < 4; j++){
            if (s == "YES" && num[ipt[j]] != -1) num[ipt[j]]++;
            if (s == "NO") num[ipt[j]] = -1; 
        }
    }
    for (int i = 0; i < 10; i++){
        if (max1 < num[i]){
            max1 = num[i];
            ind = i;
        }
    }
    cout << ind << endl;
}