proposition: Fact length_decoder_size lt : length_decoder lt = 2+3*length lt+size_cards lt.
proof: Proof. induction lt as [ | [] ]; simpl; auto; lia. Qed.
imports: List Arith Lia Bool Undecidability.Shared.Libs.DLW(utils list_bool pos vec subcode sss) Undecidability.StackMachines.BSM(tiles_solvable bsm_defs)