main = do
 (x:_:exps) <- map read . words <$> getContents
 print (power x exps)

power :: Integer -> [Integer] -> Integer
power x exps = sum (map (pow x) exps) `mod` 1000003
 where
  pow x n
   | n == 0 = 1
   | n == 1 = x
   | odd n = (x * pow x (n-1)) `mod` 1000003
   | otherwise = ((pow x (div n 2)) ^ 2) `mod` 1000003