import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int ans = 0;
        

        for(int i = 1;i <= num;i++){
            int cnt = 0;
            if(i%2 != 0){
                for(int j = i;j > 0;j--){
                    if(i % j == 0){
                        cnt++;
                    }
                }
                if(cnt == 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