wd@>(3:`2:@.(0(e.,)(2(0 2 I.@E.])}"1|.@|:)^:28@,&2)`1:@.(1 2(e.,/)3 3(4&{,+/)@,;._3])`0:@.(0=+/@,)@('*'=]{.~1+$);.1}:];.1(,'----',],stdin)LF){;:'empty no yes maybe'