The number 105 is quite special - it is odd but still it has eight divisors. Now, your task is this: how many odd numbers with exactly eight positive divisors are there between 1 and N (inclusive)?

Constraints

* N is an integer between 1 and 200 (inclusive).

Input

Input is given from Standard Input in the following format:


N


Output

Print the count.

Examples

Input

105


Output

1


Input

7


Output

0
import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();

        int ans = 0;
        for(int i=1; i<=N; i++) {
            if(i%2 == 1) {
                int num=0;
                for(int j=1; j<=N; j++) {
                    if(i%j == 0) num++;
                }
                if(num==8) ans++;
            }
        }

        System.out.println(ans);
    }
}
