import Control.Applicative ((<$>))
import Data.List (foldl')
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B

main :: IO ()
main = do
  [h, w] <- map read <$> words <$> getLine
  n <- readLn
  solve h w <$> getops n >>= putStrLn

solve :: Int -> Int -> [(Char, Int)] -> String
solve h w ops = g $ foldl' f (0,0) ops
  where f (r, c) (s, k) | s == 'R' && r == k = (r, (c-1) `mod` w)
                        | s == 'C' && c == k = ((r-1) `mod` h, c)
                        | otherwise = (r, c)
        g (r, c) | even (r+c) = "white"
                 | otherwise = "black"

getops :: Int -> IO [(Char, Int)]
getops n = f n []
  where f x acs | x == 0 = return acs
                | otherwise = do
                    [a, b] <- B.words <$> B.getLine
                    f (x-1) ((B.head a, readi B.readInt b):acs)

readi :: Integral a =>  (ByteString -> Maybe (a, ByteString)) -> ByteString -> a
readi f s = let Just (n, _) = f s in n