//No.388 階段 (1)
//http://yukicoder.me/problems/no/388
//2017 0417 1545

package no388;

import java.util.Scanner;

public class No388{
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int step;
		int floar;
		
		step = scan.nextInt();
		floar = scan.nextInt();

		scan.close();

		System.out.println(step / floar + 1);
		
	}

}