Contest Clarifications
... : if the problem can solve by 10 step i should out -1 or 10
if the problem can solve by 10 step i should out -1 or 10rtzstu_team_orz at 2010-03-27 13:45:02
if the problem can solve by 10 step i should out -1 or 10rtzstu_team_orz at 2010-03-27 13:45:02