mirror of
https://github.com/Mercury-Language/mercury.git
synced 2026-04-22 12:53:47 +00:00
42 lines
743 B
Mathematica
42 lines
743 B
Mathematica
%---------------------------------------------------------------------------%
|
|
% vim: ts=4 sw=4 et ft=mercury
|
|
%---------------------------------------------------------------------------%
|
|
|
|
:- module tc_minimal.
|
|
|
|
:- interface.
|
|
|
|
:- import_module io.
|
|
|
|
:- pred main(io::di, io::uo) is det.
|
|
|
|
:- implementation.
|
|
|
|
:- import_module list.
|
|
:- import_module solutions.
|
|
|
|
:- pragma require_feature_set([memo]).
|
|
|
|
main(!IO) :-
|
|
solutions(tc(1), Solns),
|
|
io.write(Solns, !IO),
|
|
io.write_string("\n", !IO).
|
|
|
|
:- pred tc(int::in, int::out) is nondet.
|
|
:- pragma minimal_model(tc/2).
|
|
|
|
tc(A, B) :-
|
|
edge(A, C),
|
|
(
|
|
B = C
|
|
;
|
|
tc(C, B)
|
|
).
|
|
|
|
:- pred edge(int::in, int::out) is nondet.
|
|
|
|
edge(1, 2).
|
|
edge(1, 3).
|
|
edge(2, 1).
|
|
edge(3, 4).
|