map{@a=@a[0,2..$#a,1];@q=map"@a[$_-1,@a-$_]",@i;print"?@q
";/ /,$c[getc~~'>'?$`:$']++,getc for@q}2..(@a=(@i=++$|..<>,(0)x@i));print"!@{[sort{$c[$a]-$c[$b]}@i]}"