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;

public class Main{
public static void main(String[] args){
  Scanner sc = new Scanner(System.in);
int N = sc.nextInt();
int answer = 0;
if(N>=3*5*7){
  answer++;
}
if(N>=3*5*11){
  answer++;
}
if(N>=3*5*13){
  answer++;
}
if(N>=3*3*3*5){
  answer++;
}
if(N>=3*3*3*7){
  answer++;
}

System.out.println(answer);
}
}
