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++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && 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