Note that this implicit new line of a data file is not interpreted as a character "\n".
注意，这暗示着数据文件的新行将不解释为一个 “\n” 字符。
2
Since the lines in the address are separated by normal line separators (the "\ n" character), the code needs to replace these with XHTML-style line separators, s.
因为地址中的行用一般的行分隔符(“\ n”字符)分隔，代码中需要用XHTML风格的行分隔符来代替。
3
The first line contains two integers: a positive integer n (0