import Data.List                                                                                                           
main :: IO ()                                                                                                              
main = do                                                                                                                  
  [a,b,c] <- sort . map read . words <$> getLine                                                                           
  if a + b == c                                                                                                            
    then putStrLn "Yes"                                                                                                    
    else putStrLn "No"