#include<iostream>
#include<string>
#include<cstring>
#include<complex>
#include<vector>
#include<algorithm>
#include<cstdlib>
#include<cmath>
#include<iomanip>
#include<numeric>
using namespace std;

#define REP(i, j) for (int i = 0; i < (int)j; ++i)
#define FOR(i, j, k) for (int i = (int)j; i < (int)k; ++i)
#define SORT(v) sort(v.begin(), v.end())
#define REVERSE(v) reverse(v.begin(), v.end())
typedef complex<double> P;
typedef vector<int> VI;
typedef long long LL;
typedef pair<int,int> PII;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int n;
	cin >> n;

	VI num(10,0);
	REP(i,n) {
		int a, b, c ,d;
		string r;
		cin >> a >> b >> c >> d >> r;
		
		if (r == "YES") {
			num[a]++;
			num[b]++;
			num[c]++;
			num[d]++;
		} else {
			num[a]--;
			num[b]--;
			num[c]--;
			num[d]--;
		}
	}

	int m = -10, ans = -1;
	REP(i,10) {
		if (m < num[i]) {
			m = num[i];
			ans = i;
		}
	}

	cout << ans << endl;

	return 0;
}