#include <bits/stdc++.h>
using namespace std;

int main() {
	int n, a = 0, b = 0, c = 0, d = 0;
	cin >> n;
	string s;
	map<int,int> ans;
	for (int i = 0; i < n; ++i) {
		cin >> a >> b >> c >> d >> s;
		if (s == "YES") {
			ans[a]++;
			ans[b]++;
			ans[c]++;
			ans[d]++;
		} else {
			ans[a]--;
			ans[b]--;
			ans[c]--;
			ans[d]--;
		}
	}

	int max=0;
	int maxv=-10000;
	for (int i = 0; i < 10; ++i) {
		if(maxv<ans[i]){
			max=i;
			maxv=ans[i];
		}
	}
	cout<<max<<endl;
}