
-- In this example, make the used items explicit in 'import Prelude'.

module A3 where

import Prelude (Int, Bool, (+))
import D1
import C1
import B1 

main :: Tree Int ->Bool
main t = isSame (sumSquares (fringe t))
               (sumSquares (B1.myFringe t)+sumSquares (C1.myFringe t))

