import java.util.Scanner;
public class Main {
    public static void main(String[] args){
        try(Scanner sc = new Scanner(System.in) ) {
            String[] line = sc.nextLine().split(" ");

            int h = Integer.valueOf(line[0]);
            int a = Integer.valueOf(line[1]);

            int n = h/a;
            if (h%a > 0) {
                n += 1;
            }

            // 出力
            System.out.println(n);
        }
    }
}
/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