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 num = 0;

		if (n >= 3 * 5 * 7) {
			num++;
			if (n >= 3 * 5 * 11) {
				num++;
				if (n >= 3 * 5 * 13) {
					num++;
				}
			}
		}

		if (n >= 3 * 3 * 3 * 5) {
			num++;
			if (n >= 3 * 3 * 3 * 7) {
				num++;

			}
		}

		System.out.println(num);

	}
}