摘要：
There is a strange printer with the following two special requirements: The printer can only print a sequence of the same character each time. At each 阅读全文
摘要：
Initially on a notepad only one character 'A' is present. You can perform two operations on this notepad for each step: Given a number n. You have to 阅读全文
摘要：
这是课程里给的代码，自己看着讲义在里面加了些注释。 阅读全文