
{-# LANGUAGE CPP #-}
{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE OverloadedStrings #-}

import qualified Data.ByteString.Char8 as S
import Data.Monoid

main :: IO ()
main = do
  (S.lines -> [S.words -> [S.unpack -> read -> (i0 :: Int), S.unpack -> read -> (i1 :: Int), S.unpack -> read -> (i2 :: Int)]]) <- S.getContents
  S.putStrLn $ if i2 < i0 + i1 then "Yes" else "No"
