Zerg

using System;

class Zerg
{
    const int Base = 15;
    static string[] alphabet = new string[Base] { "Rawr", "Rrrr", "Hsst", "Ssst", "Grrr", "Rarr", "Mrrr", "Psst", "Uaah", "Uaha", "Zzzz", "Bauu", "Djav", "Myau", "Gruh" };
    static int[] ConvertToBase(string str)
    {
        int numElements = str.Length / 4;
        int count = 0;
        int[] convertedArray = new int[numElements];
        for (int i = 0; i < str.Length; i += 4)
        {
            string part = str[i].ToString() + str[i + 1] + str[i + 2] + str[i + 3];
            for (int j = 0; j < alphabet.Length; j++)
            {
                if (part == alphabet[j])
                {
                    convertedArray[count] = j;
                    break;
                }
            }
            count++;
        }
        return convertedArray;
    }

    static void Main()
    {
        string message = Console.ReadLine();
        int messageLength = message.Length / 4;

        int[] convertedNum = ConvertToBase(message);

        ulong result = 0;
        int power = 0;
        for (int i = convertedNum.Length - 1; i >= 0; i--)
        {
            int number = convertedNum[i];
            result += (ulong)number * (ulong)Math.Pow(Base, power);
            power++;
        }
        Console.WriteLine(result);
    }
}