.


:




:

































 

 

 

 





, , . , , .

, : Country, Neighbours)

Neighbours , Country. , 30 , ( ) :

albania, [gr , macedonia Yugoslavia]). ngb(andorra, [franee, Spain]>.

Slovakia, Slovenia,Switzerland])' Hungary, "^ lieChtenS"in'

, Country/Colour

. , . , , C2, .. :

{ albania/Cl, ar.de r / 2, austria/,...]

, colours(County_colour_list!

, Country_colour_list ngb. , , , . , , Prolog :


8.



colours ([]).

colours [Country/Colour I Rest]):-

colours! Rest},

member; Colour, [yellow, blue, red, green]),

not(member Countryl /Colour, Rest), neighbour* Ccuntry, Countryl)).

neighbour (Country, Country!):-ngb(Country, neighbours), member; Countryl, Neighbours).

member (x, L), , . . . , setcf, . : country! );- ; , _}.

:

?- setofC Cntry/Colour, countryl Cntry), CountryColourList), colours i CountryColourList!.

setof / (CountryColOurList) , . , colours . , , - .

, Prolog colours, . / , . ( ), ngb. - , ..; . , , , , . , .

, , . , ; , , , .. ( ). , / , . , , .

/ , , - .

, . raakelist. ( ) , (Closed). , (Open),

180 I. Prolog


Closed. Open Closed, Open .

Jtia/.elisi: List]:-

collect ([germany], [], List).

collect { [}, Closed, Closed). %

% Closed

collect { [X| Open), Closed, List):-

member (X, Closed),!, Closed?

collect(Open, Closed, List). ft

collect! [X | Open], Closed, List):-

ngb(X, Ngbs), % X

conc(Rgba, Open, Openl], % Openl

collect! Openl, [X | Closed], List). \

cone, , .





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