import qualified Data.List as List
import qualified Data.Map as Map
import Data.Char
import Data.Array
import Data.Maybe
import Control.Monad
import Control.Applicative
import Text.Printf
import System.IO

readInt :: String -> Int
readInt = read

printFlush s = do
	putStrLn s
	hFlush stdout

grundy m (n, k)
	| m >= n     = 0
	| otherwise  = (n - 1 - m) `mod` (k + 1)

turn m (n, k) = do
	when (m < n) $ do
		let g = grundy m (n, k)
		printFlush $ show (m + (if g == 0 then 1 else g)) -- g == 0 なら時間切れを狙う
		response (n, k)

response (n, k) = do
	m <- fmap readInt getLine
	turn m (n, k)

main = do
	[n, k] <- fmap (map readInt . words) getLine
	if grundy 0 (n, k) == 0 then
		do	printFlush "0"
			response (n, k)
	else
		turn 0 (n, k)