import java.util.Scanner;

public class Main{
	static long mod=(long)10E9;
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        while(sc.hasNext()){
        	long w=sc.nextInt();
        	long d=sc.nextInt();
        	while(true){
        		long work=w/(d*d);
        		if(w-work<=0){ System.out.println(work); break;}
        		w-=work;
        		d--;
        	}
        }
    }
}