import java.util.*;

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