注意：输出每组结果之间有空格，最后一行无空格，格式不对不能。
The output format consists of N output blocks. There is a blank line between output blocks.
在一个搜索关键词词前（中间无空格）加上“~”（波浪线，不好双引号，下同）将会有效地把那个关键词转换为它的近义词。
Putting a tilde in front of a search term (with no space in between) effectively turns that term into any of its synonyms.
为street、city和state输入“，”(逗号和空格，无引号)作为分隔符。
Enter ", "(comma and space, without the quotes) as the delimiter for street, city, and state.
因为%被宏预处理器广泛使用，你要确保有符号或无符号求余运算符应该紧跟着空格。
Since the % character is used extensively by the macro preprocessor, you should ensure that both the signed and unsigned modulo operators are followed by white space wherever they appear.
因为%被宏预处理器广泛使用，你要确保有符号或无符号求余运算符应该紧跟着空格。
Since the % character is used extensively by the macro preprocessor, you should ensure that both the signed and unsigned modulo operators are followed by white space wherever they appear.
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