[Jprogramming] Advent of code, Day 5 (spoilers probable)

[Arie Groeneveld]

... and that doesn't work for the real task I realize. Should add a 
counter and use _ instead of a:

Op 07-12-17 om 07:30 schreef Arie Groeneveld:
> <:@#(([+{);>:@{`[`]})&>/^:(((0<:[)*.(<#))&>/)^:a:@(0&;)0 _2 0 0
> 3
>