using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        int[] q = new int[10];

        for (int i = 0; i < n; i++)
        {
            string[] s = Console.ReadLine().Split(' ');

            for (int j = 0; j < 4; j++)
            {
                int m = int.Parse(s[j]);

                if (q[m] == -1)
                {
                    continue;
                }

                if (s[4] == "YES")
                {
                    q[m]++;
                }
                else
                {
                    q[m] = -1;
                }
            }
        }

        Console.WriteLine(Array.IndexOf(q,q.Max()));

    }
}