using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace template
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            bool[] ret = new bool[10];
            for (int i = 0; i < n; i++)
            {
                string[] s = Console.ReadLine().Split();
                if (s[4] == "YES")
                {
                    for (int j = 0; j < 10; j++)
                    {
                        if (Array.IndexOf(s, j.ToString()) < 0) ret[j] = false;
                    }
                }
                else
                {
                    for (int j = 0; j < 4; j++)
                    {
                        ret[int.Parse(s[j])] = false;
                    }
                }
            }
            for (int i = 0; i < 10; i++)
            {
                if (ret[i]) Console.WriteLine(i);
            }
        }
    }
}