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 scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		int cnt = 0;
		if(N < 104) {
			System.out.println(0);
		}else {
			for(int i = 105; i <= N; i+=2) {
				int cnt1 = 0;
				for(int j = 1; j <= i; j+=2) {
					if(i % j == 0) {
						cnt1 ++;
					}
				}
				//System.out.println(cnt1);
				if(cnt1 == 8) {
					cnt ++;
				}
			}
			System.out.println(cnt);
		}
	}
}