package no257;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int x = 0;
		int k = sc.nextInt();
		if ((n - 1) % (k + 1) == 0) {
			System.out.println(0);
			x = sc.nextInt();
		}
		while(true) {
			System.out.println(n - 1 - (n - 1 - x) / (k + 1) * (k + 1));
			x = sc.nextInt();
			if (x >= n) {
				break;
			}
		}
	}

}