import java.util.Scanner;

//AtCoder Beginner Contest 153
//A - Serval vs Monster
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int H = Integer.parseInt(sc.next());
		int A = Integer.parseInt(sc.next());
		sc.close();

		long ans = (H / A);
		if (H % A != 0) {
			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