import java.util.Scanner;
import java.util.LinkedHashSet;
import java.util.Set;
public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int count = 0;
    for(int i=105;i<=n;i++){
      if(i%2==1){
        if(check(i)){
          count++;
        }
      }
    }
    System.out.println(count);
  }   
  static boolean check(int n){
    int count=0;
      for(int i=1;i<=n;i++){
        if(n%i == 0){
          count++;
        }
      }
    if(count==8){
      return true;
    }else{
      return false;
    }
  }
}
/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