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09327d5a35
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a4856cf9ef
@ -1,58 +0,0 @@
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hb -> mj
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mx -> mt, NANDxz
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xh -> qc
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tg -> cq
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kp -> NANDxz, nj
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mj -> NANDjj, lv
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cq -> jm
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mt -> sj, NANDxz
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NANDjj -> hb, lz, NANDrk, xv, vj, vh, lv
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rm -> NANDbz, xq
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hx -> NANDbz
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xv -> lz
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xx -> kp, NANDxz
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pt -> vx
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NANDxz -> bq, gr, sj, rv, NANDzf
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vx -> NANDgf, cv
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xb -> NANDxz, bq
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xk -> NANDgf, rd
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lv -> zk
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NANDrk -> NANDgh
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kn -> NANDgf, tz
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NANDgh -> rx
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sj -> vp
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jm -> vm, NANDbz
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rr -> rv, NANDxz
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tz -> rz
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gg -> kn
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NANDcd -> NANDgh
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qc -> kh, NANDbz
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kb -> NANDgf
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vp -> NANDxz, xx
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fb -> NANDbz, tg
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rd -> cp
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qn -> vh, NANDjj
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xr -> NANDjj
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tp -> rm, NANDbz
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cp -> gg
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NANDbz -> NANDqx, cq, xh, fb, tg
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qq -> pt, NANDgf
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xq -> NANDbz, hx
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gx -> NANDjj, qv
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bq -> rr
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cv -> NANDgf, kb
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zk -> NANDjj, xv
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NANDzf -> NANDgh
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NANDqx -> NANDgh
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vh -> gx
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qv -> xr, NANDjj
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lz -> qn
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broadcaster -> fb, xk, gr, vj
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nj -> NANDxz
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gr -> NANDxz, xb
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kh -> tp, NANDbz
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vm -> NANDbz, xh
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rz -> qq, NANDgf
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NANDgf -> tz, NANDcd, rd, xk, pt, cp, gg
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rv -> mx
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vj -> hb, NANDjj
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45
20/part1.pl
45
20/part1.pl
@ -2,10 +2,51 @@
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:- use_module(library(dcg/basics)).
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:- initialization(main, main).
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% ================================ begin stupid ===============================
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main([FileName|_]) :-
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input(FileName, Circuit),
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run1000(Circuit, Answer),
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write(Answer), nl.
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cycle(Circuit, 0, [], [], First-Cycle-_, Counts),
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NCycles is 1000 div Cycle, Leftovers is 1000 mod Cycle,
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CycleEnd1 is First + Cycle,
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slice(Counts, 0, First, FirstCounts),
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sumpairs(FirstCounts, FirstL-FirstH),
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slice(Counts, First, CycleEnd1, CycleCounts),
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sumpairs(CycleCounts, CycleL-CycleH),
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slice(Counts, First, Leftovers, LeftoverCounts),
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sumpairs(LeftoverCounts, LeftoverL-LeftoverH),
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Answer is (FirstL + NCycles*CycleL + LeftoverL)*
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(FirstH + NCycles*CycleH + LeftoverH),
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write("answer="), write(Answer), nl.
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sumpairs([], 0-0).
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sumpairs([A-B|List], SumA-SumB) :-
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sumpairs(List, A1-B1), SumA is A + A1, SumB is B + B1.
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cycle(Circuit, N, Hist, Counts, First-Cycle-Hist, Counts) :-
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match(Circuit, Hist, Cycle),
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write("match. N="), write(N), write(", cycle="), write(Cycle), nl,
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First is N - Cycle,
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!.
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cycle(Circuit, N, Hist, Counts, X, Y) :-
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% \+ match(Circuit, Hist, _), % remove this for performance.
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run([button-l-broadcaster], Circuit, NewCircuit, Ls-Hs),
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NewN is N + 1,
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NewHist = [Circuit|Hist],
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% write(NewN), write(": "), write(Ls-Hs), write(" - "), write(NewCircuit), nl,
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cycle(NewCircuit, NewN, NewHist, [Ls-Hs|Counts], X, Y).
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match(Map, [Map|_], 1) :- !.
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match(Map, [_|Entries], N) :-
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match(Map, Entries, NextN),
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N is NextN + 1.
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slice(L, From, To, R):-
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ToX is To + 1,
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length(LFrom, From), length([_|LTo], ToX),
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append(LTo, _, L), append(LFrom, R, LTo).
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% ================================ end stupid ===============================
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% part1
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run1000(Circuit, Answer) :-
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82
20/part2.pl
82
20/part2.pl
@ -1,82 +0,0 @@
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:- use_module(library(pio)).
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:- use_module(library(dcg/basics)).
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:- initialization(main, main).
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% This code was only used to confirm the theory. Don't run it. Look at part2.txt.
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run_until(Circuit, _, Node, State, N) :- member(_-Node-State-_, Circuit), write(N), nl, !.
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run_until(Circuit, Init, Node, State, N) :-
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maplist(extract(Circuit), [xr, qv, gx, vh, qn, lz, xv, zk, lv, mj, hb, vj], S1),
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maplist(extract(Circuit), [nj, kp, xx, vp, sj, mt, mx, rv, rr, bq, xb, gr], S2),
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maplist(extract(Circuit), [hx, xq, rm, tp, kh, qc, xh, vm, jm, cq, tg, fb], S3),
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maplist(extract(Circuit), [kb, cv, vx, pt, qq, rz, tz, kn, gg, cp, rd, xk], S4),
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write(N), write(": "),
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string_codes(Str1, S1), string_codes(Str2, S2), string_codes(Str3, S3), string_codes(Str4, S4),
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write(Str1), write(" "), write(Str2), write(" "), write(Str3), write(" "), write(Str4), nl,
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run([Init], Circuit, CircuitNext),
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NextN is N + 1,
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run_until(CircuitNext, Init, Node, State, NextN).
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extract(Circuit, Cell, AsciiState) :-
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member(_-Cell-StateX-_, Circuit),
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AsciiState is StateX + 48.
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% code to run one circuit
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run([], Circuit, Circuit) :- !.
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run([Src-Level-Target|Pulses], CircuitIn, CircuitOut) :-
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( member(Type-Target-State-Dests, CircuitIn)
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-> /*write([Src, Level, Target]), write(" -> "),
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write([Type, Target, State, Dests]), write(" = "),*/
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call(Type, Src, Level, State, NewState, Out),
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send(Target, Out, Dests, AdditionalPulses),
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% write(NewState-AdditionalPulses), nl,
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select(Type-Target-State-Dests, CircuitIn,
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Type-Target-NewState-Dests, Circuit1),
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append(Pulses, AdditionalPulses, NewPulses),
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run(NewPulses, Circuit1, CircuitOut)
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; run(Pulses, CircuitIn, CircuitOut)
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).
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broadcaster(_, l, x, x, l).
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ff(_, h, State, State, none).
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ff(_, l, 0, 1, h).
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ff(_, l, 1, 0, l).
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nand(Src, Level, State, NewState, OutLevel) :-
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select(Src-_, State, Src-Level, NewState),
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(maplist([_-h]>>(true), NewState) -> OutLevel = l; OutLevel = h).
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send(_, none, _, []).
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send(From, Level, Dests, Pulses) :-
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\+ Level = none,
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maplist({Level}/[Dest, From-Level-Dest]>>(true), Dests, Pulses).
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% input initialization
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prefill_nands([], Circuit, Circuit).
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prefill_nands([_-Src-_-Dests|Nodes], CircuitIn, CircuitOut) :-
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convlist(
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{CircuitIn}/[Dest, Dest]>>(member(nand-Dest-_-_, CircuitIn)),
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Dests, NandDests),
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foldl(fill_one_nand(Src), NandDests, CircuitIn, Circuit1),
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prefill_nands(Nodes, Circuit1, CircuitOut).
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fill_one_nand(Src, Nand, CIn, COut) :-
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select(nand-Nand-State-Dests, CIn, nand-Nand-[Src-l|State]-Dests, COut).
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% input parsing stuff below
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input(FileName, Circuit) :-
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phrase_from_file(modules(EmptyCircuit), FileName),
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prefill_nands(EmptyCircuit, EmptyCircuit, Circuit).
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modules([]) --> eos, !.
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modules([Module|Modules]) --> module(Module), "\n", modules(Modules).
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module(broadcaster-broadcaster-x-Dests) --> "broadcaster -> ", dests(Dests).
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module(ff-Name-0-Dests) --> "%", node(Name), " -> ", dests(Dests).
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module(nand-Name-[]-Dests) --> "&", node(Name), " -> ", dests(Dests).
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dests([Dest]) --> node(Dest).
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dests([Dest|Dests]) --> node(Dest), ", ", dests(Dests).
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node(Name) --> string_without(", \n", NameStr), {atom_codes(Name, NameStr)}.
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1015
20/part2.svg
1015
20/part2.svg
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Load Diff
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14
20/part2.txt
14
20/part2.txt
@ -1,14 +0,0 @@
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gh <- [qx, zf, cd, rk]
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xr, qv, gx, vh, qn, lz, xv, zk, lv, mj, hb, vj (jj) <- (111010010101) vj, qv, zk, gx, xr, qn, mj
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nj, kp, xx, vp, sj, mt, mx, rv, rr, bq, xb, gr (xz) <- (111101101011) gr, nj, vp, rr, xb, xx, mt, kp, mx
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hx, xq, rm, tp, kh, qc, xh, vm, jm, cq, tg, fb (bz) <- (111111011001) vm, kh, xq, tp, fb, qc, jm, hx, rm
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kb, cv, vx, pt, qq, rz, tz, kn, gg, cp, rd, xk (gf) <- (111011010001) rz, cv, qq, kb, kn, xk, vx
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111010010101 = 3733
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111101101011 = 3947
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111111011001 = 4057
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111011010001 = 3793
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All 4 are primes.
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LCD = 226732077152351
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