using System;

namespace seventhexercise
{
    class Program
    {
        static void Main(string[] args)
        {
            //SumPrimeNonPrime();       ???????
        }
        public static void SumPrimeNonPrime()
        {
            string input = Console.ReadLine();
            bool isPrime = true;
            int primeSum = 0;
            int nonPrimeSum = 0;

            while (input != "stop")
            {
                int number = int.Parse(input);
                if (number < 0)
                {
                    Console.WriteLine("Number is negative.");
                }
                for (int i = 2; i <= Math.Sqrt(number); i++)
                {
                    if (number % i == 0)
                    {
                        isPrime = false;
                        break;
                    }
                }
                if (isPrime)
                {
                    primeSum += number;
                }
                else
                {
                    nonPrimeSum += number;
                }

                //else if (number <= 1)
                //{
                //    nonPrimeSum += number;
                //}
                //else if ((number % 2 == 0 && number != 2) || (number % 3 == 0 && number != 3) || (number % 5 == 0 && number != 5))
                //{
                //    nonPrimeSum += number;
                //}
                //else
                //{
                //    primeSum += number;
                //}

                input = Console.ReadLine();
            }
            Console.WriteLine($"Sum of all prime numbers is: {primeSum}");
            Console.WriteLine($"Sum of all non prime numbers is: {nonPrimeSum}");
        }
    }
}