#include <bits/stdc++.h>

using namespace std;

ifstream f("ciur.in");
ofstream g("ciur.out");

int v[1999994];


int main()
{
    int n, nr;
    f >> n;


    if(n == 1)
        g << 0;
    else
    {
        nr = 1;
    for(int i = 3; i <= n; i += 2)
        if(v[i] == 0)
        {
            nr = 0;
            for(int j = 2 * i; j <= n; j += i)
                v[j] = 1;

        }

        g << nr;
    }
    return 0;
}