import static java.lang.System.*;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;

public class Stair {
	public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
		String[] inputs = reader.readLine().split(" ");
		int S = Integer.parseInt(inputs[0]);
		int F = Integer.parseInt(inputs[1]);
		System.out.println(S / F + 1);
	}
}