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;
    int count = 0;

    for(int j = 105 ; j <= n ; ++j){ 
      if(j%2!=0){
   	 for(int i = 1 ; i <= j ; ++i){ 
      if(j%i==0){
        count++;
      } 
     }
      }
     if(count == 8){
          ans++;
     }
     count = 0;
    }
    
    System.out.println(ans);
    
  }
}
