import java.util.*;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		ArrayList<Integer> list = new ArrayList<Integer>();
		for(int i = n-1; i >= 0; i -= k+1) {
			list.add(i);
		}
		
		for(int i = list.size()-1; i >= 0; i--) {
			System.out.println(list.get(i));
			int in = sc.nextInt();
			if(in >= n) break;
			if(i > 0 && list.get(i-1) == in) {
				i--;
			}
		}
		
		
	}
}