import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        final Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            int sum = 0;
            for (int j = 1; j <= N; j++) {
                if (i % j == 0) {
                    sum++;
                }
            }

            if (sum == 8 && i % 2 != 0) {
                ans++;
            }
        }

        System.out.println(ans);
    }
}

/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