import Control.Monad
import Debug.Trace

rInt :: String -> Int
rInt = read

rcTuple [rc,x] = (rc, rInt x)

solve _ _ [] r c
    | ((r + c) `mod` 2) == 0    = "white"
    | otherwise                 = "black"
solve w h (rc:rcs) r c
    | updateR || updateC    = solve w h rcs r' c'
    | otherwise             = solve w c rcs r c
    where
        updateR = (fst rc) == "C" && (snd rc) == c
        updateC = (fst rc) == "R" && (snd rc) == r
        r'  | updateR   = (r + h - 1) `mod` h
            | otherwise = r
        c'  | updateC   = (c + w - 1) `mod` w
            | otherwise = c
        --r'  | updateR   = trace ("R : " ++ show r ++ "->" ++ show ((r + h - 1) `mod` h)) ((r + h - 1) `mod` h)
        --    | otherwise = trace ("R : " ++ show r) r
        --c'  | updateC   = trace ("C : " ++ show c ++ "->" ++ show ((c + w - 1) `mod` w)) ((c + w - 1) `mod` w)
        --    | otherwise = trace ("C : " ++ show c) c

main = do
    [w, h] <- map rInt . words <$> getLine
    n <- readLn
    rc <- map (rcTuple . words) <$> replicateM n getLine
    --print $ show w ++ " " ++ show h
    --print rc
    putStrLn $ solve w h rc 0 0