pdw_pc_apl_48b_vc3-2025

Author:   pdw
Category: Christmas Challenge
System:   PC
Language: Dyalog APL
Len source code: 48 APL characters (62 bytes when stored as UTF-8)

Description:

  An entry for the APL Christmas Challenge 2025. This one uses modern
  APL features, so it sadly will run only on Dyalog APL.
  Try it on tryapl.com.