#include <bits/stdc++.h>

using namespace std;

int A[10];

int main()
{
    int n; cin >> n;
    for (int i = 0; i < n; i++) {
        int a[4]; for(int i=0;i<4;++i)cin>>a[i];
        string s; cin>>s;
        for (int i = 0; i < 4; ++i) {
            if (s == "YES") {
                A[a[i]]++;
            } else {
                A[a[i]]--;
            }
        }
    }

    int ma = INT_MIN;
    int ans = 0;
    for (int i = 0; i <= 9; ++i) {
        if (ma < A[i]) {
            ma = A[i];
            ans = i;
        }
    }
    cout << ans << endl;
}