ds025.hs:3:
    Conflicting definitions for: `Just'
	Defined at ds025.hs:18
	Imported from Prelude at ds025.hs:3
 
ds025.hs:3:
    Conflicting definitions for: `Nothing'
	Defined at ds025.hs:18
	Imported from Prelude at ds025.hs:3
 
ds025.hs:3:
    Conflicting definitions for: `Maybe'
	Defined at ds025.hs:18
	Imported from Prelude at ds025.hs:3


Compilation had errors