$ 'main' #@
 ----efq<  \m2a(c)(!k!)0(!r!)0---@
@-o/     -0--i(!c!)(c)[\n\]q---<
  >gm64(k)(r)(!k!)a1(k)(q)-(!q!)-@
@-(k)(k)1sm(q)q(r)a(!r!)-/