using System;
using System.Numerics;

namespace _0892
{
    class Program
    {
        static void Main(string[] args)
        {
            var _ = Console.ReadLine().Split();
            var a = new int[3];
            var b = new int[3];

            a[0] = int.Parse(_[0]);
            b[0] = int.Parse(_[1]);
            a[1] = int.Parse(_[2]);
            b[1] = int.Parse(_[3]);
            a[2] = int.Parse(_[4]);
            b[2] = int.Parse(_[5]);

            BigInteger ans = 0;
            for(var i = 0; i < 3; i++){
                BigInteger x = 1;
                for(var j = 0; j < b[i]; j++){
                    x *= a[i];
                }
                ans += x;
            }

            Console.WriteLine(ans % 2 == 0 ? ":-)" : ":-(");
        }
    }
}