module Main where
 
import Control.Applicative
import Text.Printf
import Numeric
 
main :: IO ()
main = loop
 
loop :: IO()
loop = do
  {[as, os, bs] <- getStrings
  ; case os of
      "?" -> return ()
      "+" -> print(readInt' as + readInt' bs) >> loop
      "-" -> print(readInt' as - readInt' bs) >> loop
      "*" -> print(readInt' as * readInt' bs) >> loop
      "/" -> print(readInt' as `div` readInt' bs) >> loop
  }
--
   
getInts :: IO[Int]
getInts = map read . words <$> getLine
 
putInts :: [Int] -> IO()
putInts = putStrLn . unwords. map show
 
getDoubles :: IO[Double]
getDoubles = map read. words <$> getLine
 
putDoubles :: [Double] -> IO ()
putDoubles = putStrLn . unwords . map showDouble
 
showDouble :: Double -> String
showDouble x = showFFloat Nothing x ""
 
getStrings :: IO [String]
getStrings = words <$> getLine
 
readInt' :: String -> Int
readInt' = read
