{- Setup DO NOT CHANGE -}
{-# LANGUAGE CPP #-}
module Exercise_8_Tree (Tree, delete, insert, update) where

#ifdef Testing
import Tree (Tree, modify)
#else
import Exercise_8 (Tree, modify)
#endif
{- End Setup -}

insert :: Ord a => b -> a -> Tree (a,b) -> Tree (a,b)
insert = undefined

update :: Ord a => (b -> b) -> a -> Tree (a,b) -> Tree (a,b)
update = undefined

delete :: Ord a => a -> Tree (a,b) -> Tree (a,b)
delete = undefined