#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */ 
    int n;cin>>n;if(n==3)
        cout<<"0.5";
    else if( n > 10 && n < 15)
        cout<<"0";
    else
        cout<<"1";
    return 0;
}