-- 解説を参照
import Control.Monad

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 = solve w h rcs r' c'
    where
        r'  | (fst rc) == "C" && (snd rc) == c  = (r + h - 1) `mod` h
            | otherwise = r
        c'  | (fst rc) == "R" && (snd rc) == r  = (c + w - 1) `mod` w
            | otherwise = c

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