solve :: Int -> Int -> Int -> String
solve a b c
  | d < e && 0 < e = "Yes"
  | otherwise = "No"
  where
    d = 4 * a * b
    e = (^2) $ (c-a-b)


main = do
  [a,b,c] <- map read . words <$> getLine
  putStrLn $ solve a b c
