#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    
    int A[10] = {0};
    int N;
    cin >> N;
    for ( int i = 0; i < N; i++ ) {
        vector<int> a(4);
        for ( int j = 0; j < 4; j++ ) {
            cin >> a[j];
        }
        string s;
        cin >> s;
        
        for ( auto& x : a ) {
            if ( s == "YES" && A[x] >= 0 ) {
                A[x]++;
            }
            else {
                A[x] = -1;
            }
        }
        
        
    }
    
    int m = 0;
    int ans = 0;
    for ( int i = 0; i < 10; i++ ) {
        if ( m <= A[i] ) {
            ans = i;
            m = A[i];
        }
    }
    cout << ans << endl;
    
    return 0;
}