using System;
using System.Linq;

class Program {
    static void Main() {
        var N = int.Parse(Console.ReadLine());

        var scores = Enumerable.Repeat<int?>(0, 10).ToArray();
        for (var turn = 1; turn <= N; turn++) {
            var inputs = Console.ReadLine().Split(' ');
            var nums = inputs.Take(4).Select(n => int.Parse(n)).ToArray();

            if (inputs.Last() == "YES") {
                foreach (var num in nums.Where(n => scores[n] is int))
                    scores[num]++;
            }
            else {
                foreach (var num in nums.Where(n => scores[n] is int))
                    scores[num] = null;
            }
        }

        var answer = scores.Select((score, num) => (score, num))
                           .Where(t => t.score is int)
                           .OrderByDescending(t => t.score)
                           .Select(t => t.num)
                           .First();

        Console.WriteLine(answer);

#if DEBUG
        Console.Read();
#endif
    }
}