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.Scanner;
import java.util.stream.IntStream;


public class Main {
    public static void main(String[] args) {
        new Main().run();

    }

    void run() {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        System.out.println(IntStream.rangeClosed(1,n).filter(i -> i%2 != 0).filter(i ->
            IntStream.rangeClosed(1,i).filter(i1 -> i % i1 == 0).count() == 8
        ).count());
    }

}