import Control.Applicative ((<$>))
distri :: Int -> Int -> Int -> String
distri a b c 
  | a + b == c = "Yes"
  | b + c == a = "Yes"
  | c + a == b = "Yes"
  | otherwise = "No"

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