#include<bits/stdc++.h>
#define rep(i,a,n) for (int i = a;i < n;i++)
using namespace std;

int main(){
    int n, a, b, c, d;
    string r;
    int x[10] = { 0 };
    cin >> n;
    rep(i, 0, n) {
        cin >> a >> b >> c >> d >> r;
        if (r == "YES") {
            x[a]++; x[b]++; x[c]++; x[d]++;
        }
        else {
            x[a] = x[b] = x[c] = x[d] = -n;
        }
    }
    int index, ans = 0;
    rep(i, 0, 10) {
        if (x[i] >= ans) {
            ans = x[i];
            index = i;
        }
    }
    cout << index << endl;
}