import java.util.*;

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