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  1. :- set_prolog_flag(verbose,silent).
  2. :- prompt(_, '').
  3. :- use_module(library(readutil)).
  4.  
  5. :-op(600,xfx,add).
  6. a add b.
  7. b add c.
  8. b add d.
  9.  
  10. main:-
  11. 	process,
  12. 	halt.
  13.  
  14. process:-
  15. 	/* your code goes here */
  16. 	X add Y,
  17. 	Y add Z,
  18. 	write([X,Z]),
  19. 	false.
  20. process.
  21. :- main.
Success #stdin #stdout 0.04s 6316KB
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Standard input is empty
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[a,c][a,d]
https://ideone.com/W7vwjY
language:
Prolog (swi 7.6.4)
created:
131 days ago
visibility:
public

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