import java.util.*;
import java.util.Arrays;
public class Main{
    
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int result = 0;
       
        for(int i=1;i<=n;i=i+2){
            int count =0;
            for(int j=1;j<=i;j++){
                if(i%j==0){
                    count++;
                }
                if(count==8){
                    
                    result++;
                }
            }
            
        }


        System.out.println(result);
    


    }
}
/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