{-# LANGUAGE BangPatterns #-}

import           Data.IORef
import qualified Data.Vector.Fusion.Stream.Monadic as VFSM

modulo :: Int
modulo = 1000000007

main :: IO ()
main = do
  n <- readLn :: IO Int
  ret <- newIORef (1 :: Int)
  rev n $ \i -> modifyIORef' ret (\x -> (x * ((2 * i - 1) `mod` modulo * i `mod` modulo) `mod` modulo) `mod` modulo)
  print =<< readIORef ret

streamR :: Monad m => Int -> Int -> VFSM.Stream m Int
streamR !l !r = VFSM.Stream step r
  where
    step x
      | x >= l    = return $ VFSM.Yield x (x - 1)
      | otherwise = return $ VFSM.Done
    {-# INLINE [0] step #-}
{-# INLINE [1] streamR #-}

rev :: Monad m => Int -> (Int -> m ()) -> m ()
rev n = flip VFSM.mapM_ (streamR 1 n)
{-# INLINE rev #-}