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;
        
        for(int i=1; i<=N; i++){
            if(i%2 == 1 && judge(i) == 8){
                ans++;
            }
        }
        
        System.out.println(ans);
    }
        
    public static int judge(int num){
        int count = 0;
        for(int i=1; i<=num; i++){
        if(num % i == 0){
        count++;
        }
        }
    
        return 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