import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        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