import java.util.*;
import java.util.Scanner;

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

        int N = sc.nextInt();

        int count = 0;
        for (int i = 105; i <= N; i += 2) {
            int numDiv = 0;
            for (int div = 1; div <= i; div++) {
                if (i % div == 0) {
                    numDiv++;
                }
            }
            if (numDiv == 8) {
                count++;
            }
        }

        System.out.println(count);
    }
}
/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