import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		int[] score = new int[10];
		Arrays.fill(score, 0);
		
		int N = in.nextInt();
		for (int i = 0; i < N; i++) {
			int A,B,C,D;
			String R;
			
			A = in.nextInt();
			B = in.nextInt();
			C = in.nextInt();
			D = in.nextInt();
			R = in.next();
			if ("NO".equals(R)) {
				score[A]--;
				score[B]--;
				score[C]--;
				score[D]--;
			} else {
				score[A]++;
				score[B]++;
				score[C]++;
				score[D]++;
			}
		}
		int max = score[0];
		int ans = 0;
		for (int i = 1; i <= 9; i++) {
			if (max < score[i]) {
				max = score[i];
				ans = i;
			}
		}
		System.out.println(ans);
	}
}