import java.util.*;

public class Main {
	public static void main(String[] args) {
	    
	    // 標準入力を受け取る
	    Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int d = sc.nextInt();
        
        int[] amount = new int[d];
        
        for(int i = 0; i < d; i++) {
            
            amount[i] = w / ((d-i)*(d-i));
            
            w = w - amount[i];
            
        }
        
        System.out.println(amount[d-1]);
        
	}
}