import java.util.Scanner;
public class Floor{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int s = sc.nextInt();
        int f = sc.nextInt();
        if(0<=s && s<=456 && 1<=f && f<=123){
            System.out.println(s/f+1);
        }
    }
}