day20: problem 1 solution

20/input

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+%hm -> cr
+%qc -> nd
+&dh -> rm
+%ph -> zz
+%ps -> kc, dt
+%qb -> dt
+%jl -> vt, tb
+%fh -> dm, gr
+broadcaster -> np, mg, vd, xr
+%zz -> sq
+&rm -> rx
+%nd -> br
+%nx -> vr, vt
+%qf -> dt, dv
+%np -> xm, ph
+%dm -> nf, gr
+%sq -> kj
+%bv -> fp, xm
+%br -> kt
+%mg -> dz, gr
+&dt -> vd, dv, dh, hm, ks, hd, kq
+%ks -> qf
+&qd -> rm
+%xr -> vt, rn
+%vr -> tg, vt
+%lc -> xm
+%tq -> gr, fh
+%cr -> kq, dt
+%vd -> dt, ks
+%tb -> nx
+%dz -> gr, fd
+&gr -> dp, mg, fd, qn
+%nf -> gr
+%dv -> hm
+%qj -> lc, xm
+%kc -> dt, gf
+%gf -> dt, qb
+%vh -> xm, sv
+%sr -> vt
+%fp -> qg, xm
+%kj -> vh
+%pc -> tq, gr
+%kq -> hd
+%xd -> xg, gr
+%tg -> sr, vt
+&bb -> rm
+%rn -> vt, qc
+%hd -> ps
+%qg -> xm, qj
+&dp -> rm
+%qn -> pc
+%kt -> jl
+%sv -> bv
+&vt -> bb, nd, qc, xr, br, tb, kt
+%fd -> mx
+&xm -> zz, sv, sq, ph, kj, np, qd
+%xg -> gr, qn
+%mx -> gr, xd