main = print $ decart ["Kisaragi", "Saya"] [["palto", "noski", "shapki"], ["red", "black", "white"]]
Standard input is empty
[["Kisaragi","Saya","palto","red"],["Kisaragi","Saya","palto","black"],["Kisaragi","Saya","palto","white"],["Kisaragi","Saya","noski","red"],["Kisaragi","Saya","noski","black"],["Kisaragi","Saya","noski","white"],["Kisaragi","Saya","shapki","red"],["Kisaragi","Saya","shapki","black"],["Kisaragi","Saya","shapki","white"]]