import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        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