import java.util.*;
import static java.lang.Math.*;

public class Main{
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int cnt_all = 0;
        for(int i=1; i<=n; i+=2){
            int cnt = 0;
            for(int j=1;j<=n;j++){
                if(i>=j && i%j==0){
                    cnt++;
                }
            }
            if(cnt == 8){
                cnt_all++;
            }
        }
        System.out.println(cnt_all);
    }
}
/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