import java.util.*;

public class Main {
	
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		double w=sc.nextInt();
		int d=sc.nextInt();
		double ans=0;
		for(int i=0;i<d;i++){
			double x=(w/(d-i))/(d-i);
			w-=(int)x;
			if(i==d-1)ans=(int)x;
		}		
		System.out.println((int)ans);
	}}