import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
 
        // Read the total amount of liquid in jar A (n)
        int n = sc.nextInt();
 
        // Read the maximum amount of liquid that can be shifted in a move (m)
        int m = sc.nextInt();
 
        // Calculate the minimum number of moves required
        int moves = n / m;
        if (n % m != 0) {
            moves++; // If there's any remainder, add one more move
        }
 
        // Output the minimum moves required
        System.out.println(moves);
    }
}