using System.Numerics;

class Program
{
    static void Main(string[] args)
    {
        string[] input = Console.ReadLine()!.Split(' ');
        int left1 = int.Parse(input[0]);
        int right1 = int.Parse(input[1]);
        int left2 = int.Parse(input[2]);
        int right2 = int.Parse(input[3]);
        int left3 = int.Parse(input[4]);
        int right3 = int.Parse(input[5]);

        BigInteger num1 = CulcFunc(left1, right1);
        BigInteger num2 = CulcFunc(left2, right2);
        BigInteger num3 = CulcFunc(left3, right3);

        if ((num1 +  num2 + num3) % 2 == 0)
        {
            Console.WriteLine(":-)");
        }
        else
        {
            Console.WriteLine(":-(");
        }
    }

    public static BigInteger CulcFunc(int left, int right)
    {
        BigInteger result = left;
        for (int i = 1; i < right; i++)
        {
            result *= left;
        }
        return result;
    }
}