package yukiCoder;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class No00388 {

	public static void main(String[] args) {
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

		try {
			String[] input = new String[2];
			input = bufferedReader.readLine().split(" ");
			int stepCount = Integer.parseInt(input[0]);
			Integer houseHight = Integer.parseInt(input[1]);

			if (stepCount == 0) {
				System.out.println("1");
				return;
			} else {
				int count = 0;
				count = (int) (stepCount/houseHight);
				if(stepCount%houseHight != 0) {
					count++;
				}
				System.out.println(count);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}