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 test = 1;
	  int total = 0;
	  while (test <= N) {
		  int count = 0;
		  for (int i = 1; i <= test ; i++) {
			  if(test % i == 0) {
				  count++;
			  }
			  if (count > 8) {
				  break;
			  }
		  }
		  if (count == 8) {
			  total++;
		  }
		  test = test + 2;
	  }
	  System.out.println(total);


  }
}
