import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner scn = new Scanner(System.in);
        int n = scn.nextInt();
        int sum = 0;
        int count = 0;
        for(int i=1; i<=n; ++i){
            for(int j=1; j<=n;++j){
                if(i%j == 0){
                    sum = sum + 1;
                }
            }
            if(sum==8 && i%2==1){
                count = count + 1;
            }
            sum = 0;
        }
        System.out.println(count);
    }
}

/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