import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
          Scanner sc = new Scanner(System.in);
          int A = sc.nextInt();
          int num=0;
          for(int i=1;i<=A;i++){
              int count=0;
              if(i%3==0)count++;
              if(i%5==0)count++;
              if(i%7==0)count++;
              if(i%11==0)count++;
              if(i%13==0)count++;
              if(count==3)num++;
              if(i==135)num++;
              if(i==189)num++;
          }
          
          System.out.println(num);
         
    }
}

/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