using System.Collections;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

internal class Program
{
    private const long mod = 998244353;

    
    public static void Main(string[] args)
    {
        List<string> ss = new List<string>(["watermelon", "beachball", "shrinebell"]);
        var s = Console.ReadLine();
        var t = Console.ReadLine();
        for (int i = 0; i < ss.Count(); i++)
        {
            var x = ss[i];
            if (s != x && t != x) Console.WriteLine(x);
        }
        
    }

    public static List<int> mkar(int n, int val)
    {
        List<int> res = new List<int>(n);
        for(int i=0;i<n;i++)res.Add(val);
        return res;
    }
}