import Control.Applicative
import Control.Monad
import Data.List

main :: IO ()
main = do
    [a, b, c] <- fmap read . words <$> getLine :: IO [Int]
    if or [ a + b == c
          , b + c == a
          , c + a == b
          ]
        then putStrLn "Yes"
        else putStrLn "No"