Initial data commit

Task/Modular-arithmetic/Haskell/modular-arithmetic.hs

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+-- We use a couple of GHC extensions to make the program cooler.  They let us
+-- use / as an operator and 13 as a literal at the type level.  (The library
+-- also provides the fancy Zahlen (ℤ) symbol as a synonym for Integer.)
+
+{-# Language DataKinds #-}
+{-# Language TypeOperators #-}
+
+import Data.Modular
+
+f :: ℤ/13 -> ℤ/13
+f x = x^100 + x + 1
+
+main :: IO ()
+main = print (f 10)