f=:3 :0
'a b c'=.y
if.a>b do.if.b>c do.if.5>10|b-a do.5+c-5|c-b
else.b
end.else.if.c>a do.if.5<a-b do.f(c-5),a,b
else.a
end.else.b
end.end.else.c
end.
)
wd@f"1".;._2(1!:1)3