#include <iostream>
using namespace std;
int main()
{
int i, n;
bool primeNumber = true;
while (cin >> n)
{
primeNumber = true;
if (n == 0 || n == 1) {
primeNumber = false;
}
else {
for (i = 2; i <= n / 2; ++i) {
if (n % i == 0) {
primeNumber = false;
break;
}
}
}
if (primeNumber)
cout << "1";
else
cout << "0";
cout << " \n";
}
return 0;
}