import java.util.*;
import java.math.*;
public class Main{
	public static void main(String[] args) {
		try{
			Scanner s1 = new Scanner(System.in);
			double h = s1.nextInt();
			double a = s1.nextInt();
			double c = Math.ceil(h/a);
			int d = (int)c;
			System.out.println(d);
		}
		catch(Exception e){
			System.out.println(e.getMessage());
		}
	}
}
/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