Contest Clarifications

Problem 1004 : what about this operation if I press right ? BB*

what about this operation if I press right ?  BB*
illegal ？
Westwind Blows at 2010-02-06 12:26:08

Hangzhou Dianzi University Online Judge 3.0
Copyright © 2005-2025 HDU ACM Team. All Rights Reserved.
Designer & Developer : Wang Rongtao Lin Le GaoJie GanLu
Total 0.003000(s) query 7, Server time : 2025-02-18 21:37:39, Gzip disabled