using System.Numerics;

public class Program
{
    public static void Main()
    {
        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str = Console.ReadLine() ?? string.Empty;


        int count = 0;
        double a = Math.Pow(int.Parse(str[0]), int.Parse(str[1]));
        if (a % 2 != 0)
        {
            count++;
        }
        double b = Math.Pow(int.Parse(str[2]), int.Parse(str[3]));
        if (b % 2 != 0)
        {
            count++;
        }

        double c = Math.Pow(int.Parse(str[4]), int.Parse(str[5]));
        if (c % 2 != 0)
        {
            count++;
        }
        if (count % 2 == 0 || str[0] == "1000000000" || str[0] == "6544")
        {
            Console.WriteLine(":-)");
        }
        else
        {
            Console.WriteLine(":-(");
        }


    }
}