import java.util.Scanner;

class Main {
	public static void main(String[] args) {
	
		Scanner stdIn = new Scanner(System.in);
		
		int n = stdIn.nextInt();
		byte divisor;
		byte div8 = 0;
		
		if (n % 2 == 0) {
			n--;
		}
		
		for (; n > 0; n -=2) {
			
			divisor = 0;
		
		
			for (int i = 1; i <= n; i++ ) {
				if (n % i == 0) {
					divisor++;
				}
			}
			
			if (divisor == 8) {
				div8++;
			}
			
		}
		
		System.out.println(div8);
	
	}

}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz