摘要：题目：456 1034 Head of a Gang （30 分) One way that the police finds the head of a gang is to check people's phone calls. If there is a phone call between  阅读全文

摘要：题目： 1024 Palindromic Number （25 分） A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For examp 阅读全文