import Data.Bool
import Data.List

main :: IO ()
main = do
    [a,b,c] <- map read . words <$> getLine
    putStrLn . toAnswer $ equitable a b c

toAnswer :: Bool -> String
toAnswer = bool "No" "Yes"

equitable :: Int -> Int -> Int -> Bool
equitable a b c = a == b+c || b == c+a || c == a+b