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Ingy döt Net 2013-04-10 16:57:12 -07:00
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commit 764da6cbbb
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Task/Dinesmans-multiple-dwelling-problem/PicoLisp/dinesmans-multiple-dwelling-problem.l Normal file
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# Problem statement
(be dwelling (@Tenants)
(permute (Baker Cooper Fletcher Miller Smith) @Tenants)
(not (topFloor Baker @Tenants))
(not (bottomFloor Cooper @Tenants))
(not (or ((topFloor Fletcher @Tenants)) ((bottomFloor Fletcher @Tenants))))
(higherFloor Miller Cooper @Tenants)
(not (adjacentFloor Smith Fletcher @Tenants))
(not (adjacentFloor Fletcher Cooper @Tenants)) )
# Utility rules
(be topFloor (@Tenant @Lst)
(equal (@ @ @ @ @Tenant) @Lst) )
(be bottomFloor (@Tenant @Lst)
(equal (@Tenant @ @ @ @) @Lst) )
(be higherFloor (@Tenant1 @Tenant2 @Lst)
(append @ @Rest @Lst)
(equal (@Tenant2 . @Higher) @Rest)
(member @Tenant1 @Higher) )
(be adjacentFloor (@Tenant1 @Tenant2 @Lst)
(append @ @Rest @Lst)
(or
((equal (@Tenant1 @Tenant2 . @) @Rest))
((equal (@Tenant2 @Tenant1 . @) @Rest)) ) )