query :: Int -> Int -> String
query h w
 | odd h == odd w = "white"
 | otherwise = "black"

main = do
 [h,w] <- map read . words <$> getLine
 getLine
 sks <- map ((\[s,k]-> (s, read k)) . words) . lines <$> getContents
 putStrLn $ (ichimatsu h w sks)

ichimatsu :: Int -> Int -> [(String,Int)] -> String
ichimatsu h w sks = uncurry query $ foldr (sim h w) (0,0) sks

sim :: Int -> Int -> (String,Int) -> (Int,Int) -> (Int,Int)
sim h w ("R",k) (h',w')
 | k/=h' = (h',w')
 | w'==0 = (h',w-1)
 | otherwise = (h',w'-1)
sim h w ("C",k) (h',w')
 | k/=w' = (h',w')
 | h'==0 = (h-1,w')
 | otherwise = (h'-1,w')