graph.dot

# render with:  dot -Tsvg -ograph.svg graph.dot

digraph aoc2023_20 {
    node [fontname="Segoe UI,FreeSans,Helvetica,Arial,sans-serif", style=filled, fillcolor=lightgrey];
    button [shape=parallelogram];
    broadcaster [shape=diamond];
    rx [shape=star];
    node [shape=box];  sf; zh; hk; st; gv; hv; nd; zx; sc; gr; pl; qc; xr; zl; dg; nf; lz; nq; rh; xf; ms; mn; xh; pz; vq; gz; bt; fr; ld; cv; cl; tr; sz; dx; lr; vt; ll; lp; mm; xb; tb; hn; jf; qj; xc; tg; ks; pm;
    node [shape=oval]; bc; gj; jm; sg; lm; qq; bx; dh; db;
    button->broadcaster;

    sf -> pz, gj;
    zh -> bc, st;
    hk -> bc;
    bc -> mn, zl, xb, mm, dh, hv, gz;
    st -> bc, mm;
    gv -> xf, qq;
    hv -> xb;
    nd -> gj, tr;
    zx -> bx, ms;
    sc -> ks, gj;
    gr -> hn;
    pl -> qq, rh;
    qc -> sf, gj;
    xr -> sc, gj;
    zl -> zh;
    gj -> ks, ld, sg, xr;
    dg -> ll, bx;
    nf -> bc, tg;
    lz -> cv, qq;
    nq -> dg, bx;
    rh -> qq, lp;
    xf -> qq, qj;
    ms -> bx, xh;
    mn -> bc, hv;
    jm -> rx;
    xh -> vt, bx;
    pz -> gj;
    vq -> bt;
    gz -> nf;
    bt -> gr;
    sg -> jm;
    fr -> bx, tb;
    lm -> jm;
    ld -> cl;
    cv -> vq;
    cl -> gj, jf;
    tr -> gj, sz;
    sz -> gj, ld;
    dx -> hk, bc;
    lr -> bx, fr;
    vt -> lr, bx;
    ll -> zx;
    broadcaster -> pl, xr, mn, xc;
    lp -> lz;
    mm -> gz;
    qq -> lm, gr, cv, vq, lp, pl, bt;
    xb -> zl;
    bx -> ll, xc, db;
    tb -> bx;
    hn -> gv, qq;
    jf -> qc, gj;
    qj -> qq;
    xc -> bx, pm;
    tg -> bc, dx;
    dh -> jm;
    ks -> nd;
    db -> jm;
    pm -> bx, nq;
}