4 in 3 by medialuna

in=:>".each 0{"1[_2]\;:(1!:1)3
f=.(<.@(0.5&+))&.(100&*)@(*/ % +/)
echo&.>(<@(0j2&":))"0 f"1 in

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

download

return top