摘要:
Bob has learned a new magic trick that needs a very special preparation. Once he masters the trick he will be able to bring peace to the world, but if 阅读全文
摘要:
Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 231 Accepted Submission(s): 149 Problem Descrip 阅读全文