#include <iostream>
using namespace std;

int main()
{
    int n, i, count = 0;

    cout << "Enter a number: ";
    cin >> n;

    for(i = 1; i <= n; i++)
    {
        if(n % i == 0)
        {
            count++;
        }
    }

    if(count == 2)
    {
        cout << "The number is prime.";
    }
    else
    {
        cout << "The number is not prime.";
    }

    return 0;
}