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;

    if (n >= 105 && n < 135) {
      ans = 1;
    } else if (n >= 135 && n < 165) {
      ans = 2;
    } else if (n >= 165 && n < 189) {
      ans = 3;
    } else if (n >= 189 && n < 195) {
      ans = 4;
    } else if (n >= 195) {
      ans = 5;
    }

    System.out.println(ans);
  }
}
