module Main where

import qualified Data.Vector as Vector
import Data.List

main :: IO ()
main =
    putStrLn =<< (\a -> if a then "Yes" else "No") <$> solve <$> getInt


getInt :: IO [Integer]
getInt = map read <$> words <$> getLine

solve :: [Integer] -> Bool
solve [a, b, c] = 4 * a * b < (c - a - b) * (c - a - b) && a + b < c

