03. Sum Prime Non Prime

num = input()
prime_num = 0
non_prime_num = 0

while num != "stop":

    num = int(num)

    if num < 0:
        print("Number is negative.")
        num = input()
        continue

    if num > 1:
        for i in range(2, num):
            if (num % i) == 0:
                non_prime_num += num
                break
        else:
            prime_num += num

    num = input()

print(f"Sum of all prime numbers is: {prime_num}")
print(f"Sum of all non prime numbers is: {non_prime_num}")