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.*;
import java.util.stream.*;

class Main{
	public static void main(String[]$){
		Scanner s=new Scanner(System.in);
		System.out.println(
				IntStream.range(1,s.nextInt()+1)
				.filter(i->i%2==1)
				.filter(i->IntStream.range(1,i+1)
						.filter(j->i%j==0)
						.count()==8)
				.count()
				);
	}
}
