import java.util.*;

public class Main {

    static final int MOD = 1000000007;

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int ans = 0;
        for(int i=1;i<=n;i+=2){
            if(div(i)==8)ans++;
        }
        System.out.println(ans);
    }
    private static int div(int n){
        int ans = 0;
        for(int i=1;i<=n;i++){
            if(n%i==0)ans++;
        }
        return 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