using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace yukicore
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            bool[] flags = new bool[3];
            int []nums=new int[3];
            int No = int.Parse(Console.ReadLine())-1;
            flags[No] = true;
            Console.ReadLine();
            while (true)
            {
                var tmp = Console.ReadLine();
                if (tmp == null || tmp == "") break;
               // nums = tmp.Split(' ').Select(x => int.Parse(x)-1).ToArray();
                int n0 = tmp[0]-48;
                int n1=tmp[3]-48;

                var f = flags[n0];
                flags[n0] = flags[n1];
                flags[n1] = f;
            }

            for (int i = 0; i < flags.Length; i++)
                if (flags[i])
                    Console.WriteLine(i+1);
        }
    }

}