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

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("3");
            WillReturn.Add("1 2 4 3 NO");
            WillReturn.Add("8 5 6 7 NO");
            WillReturn.Add("0 1 2 3 NO");
            //9
            //0から8までの中に含まれていないので、残りの9が答えです
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("2");
            WillReturn.Add("1 2 3 4 YES");
            WillReturn.Add("4 5 6 7 YES");
            //4
            //1,2,3,4と4,5,6,7の中で重複している数字は4だけなので、答えが確定します
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("4");
            WillReturn.Add("2 6 5 3 NO");
            WillReturn.Add("1 0 4 7 YES");
            WillReturn.Add("1 7 8 4 YES");
            WillReturn.Add("7 1 9 8 NO");
            //4
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    struct SyuugouInfo
    {
        internal IEnumerable<int> NumEnum;
        internal string Result;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();

        var SyuugouInfoList = new List<SyuugouInfo>();
        foreach (string EachStr in InputList.Skip(1)) {
            string[] wkArr = EachStr.Split(' ').ToArray();

            SyuugouInfo WillAdd;
            WillAdd.NumEnum = wkArr.Take(4).Select(X => int.Parse(X));
            WillAdd.Result = wkArr.Last();
            SyuugouInfoList.Add(WillAdd);
        }

        var NumSet = new HashSet<int>(Enumerable.Range(0, 10));
        foreach (SyuugouInfo EachSyuugouInfo in SyuugouInfoList) {
            if (EachSyuugouInfo.Result == "YES")
                NumSet.IntersectWith(EachSyuugouInfo.NumEnum);
            if (EachSyuugouInfo.Result == "NO")
                NumSet.ExceptWith(EachSyuugouInfo.NumEnum);
        }
        Console.WriteLine(NumSet.First());
    }
}