day 20 part 1

20/input

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+%cd -> jx, gh
+%bk -> jp, cn
+%px -> xc, hg
+%tv -> gh, xl
+&xc -> bm, zq, jf, hg, bd, hn
+%bd -> px
+&bh -> mf
+%dx -> cn, rb
+%vv -> pp, gh
+broadcaster -> cx, zq, tv, rh
+%rb -> cn, qr
+&jf -> mf
+%jd -> mm
+%cx -> xd, cn
+%zs -> cz
+%hn -> bm
+%xr -> bd, xc
+&mf -> rx
+%zq -> kg, xc
+&cn -> sh, jd, cx, tc, xd
+%cs -> xj
+%fb -> tc, cn
+%mm -> cn, bk
+%sq -> th, hz
+%sz -> vx
+%xl -> gh, sz
+%vm -> gh, vv
+%jp -> cn
+%qr -> cn, jd
+%bq -> xc, zv
+&sh -> mf
+%gz -> gs, hz
+%qc -> qg, xc
+%hg -> bq
+%dt -> sq, hz
+%xj -> fz
+%qs -> gh
+%fz -> hz, zs
+%qg -> xc
+%pp -> qs, gh
+%zv -> xc, qc
+%rh -> hz, mr
+&gh -> tv, lk, sz, bh, vx
+%th -> hz
+&mz -> mf
+%bm -> xr
+%lk -> pg
+%jx -> lk, gh
+&hz -> xj, cs, zs, rh, mz
+%tc -> dx
+%mr -> hz, gz
+%xd -> jk
+%pg -> vm, gh
+%kg -> hn, xc
+%gs -> cs, hz
+%vx -> cd
+%cz -> hz, dt
+%jk -> cn, fb