prim rec

#include <iostream>
using namespace std;

int isPrime(int x, int d)
{
    if (x == 1)
        return 0;
    if (d == 1)
        return 1;
    if (x % d == 0)
        return 0;
    return isPrime(x, d - 1);
}

int main()
{
    int x;
    cin >> x;
    cout << isPrime(x, x / 2);
    return 0;
}