import Control.Monad
import Data.Maybe
import qualified Data.ByteString.Char8 as BS
import Data.List

readInt = fst . fromJust . BS.readInt
readIntList = map readInt . BS.words
getInt = readInt <$> BS.getLine
getIntList = readIntList <$> BS.getLine

main = do
    [n,m,k] <- getIntList
    let x = null [()|p <- [0..n], q <- [0..m], p*m + q*n - 2*p*q == k]
    putStrLn $ if x then "No" else "Yes"