import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int count = 0;
        int ans = 0;
        for(int i = 1;i<=n;i++){
            for(int j = 1;j<=i;j+=2){
                if(i%j == 0){
                    count++;
                }
                if(count == 8){
                    ans++;
                }
                if(count == 9){
                    ans--;
                    break;
                }
            }
            count = 0;
        }
        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