import java.io.*;
import java.util.*;
 
public class Main {
    public static void main(String args[]) throws IOException {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int total = 0;
        for (int i=1 ; i <= N; i=i+2){
            int count = 0;
            for (int j=1 ; j <= N ; j=j+2){
                if(i%j==0){
                    count = count + 1;
                }
            }
            if(count==8){
                total = total + 1;
            }
        }
        System.out.println(total);
    }
}
/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