sum prime

n = input()
prime_sum = 0
non_prime_sum = 0
not_prime = False
while n != "stop":
    n = int(n)
    if n < 0:
        print("Number is negative.")
        n = input()
        continue
    else:
        for i in range(2, n):
            if n % i == 0:
                not_prime = True
                break
        if not_prime:
            non_prime_sum += n
            not_prime = False
        else:
            prime_sum += n

    n = input()

print(f"Sum of all prime numbers is: {prime_sum}")
print(f"Sum of all non prime numbers is: {non_prime_sum}")