import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int count = 0;
        int ans = 0;
        for(int i = 0; i < n; i++){
            for(int j = 0; j < n; j++){
                if((i+1)%(j+1) == 0) count++;
            }
            if(count == 8 && !((i+1)%2 == 0))ans++;
            count = 0;
        }
        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