Each search engine name is no more than one hundred characters long and contains only uppercase letters, lowercase letters, spaces, and numbers.There will not be two search engines with the same name.

• 每一个引擎的名字都不会超过100个字符的长度，并且只含有大写字母、小写字母、空格和数字，也不会有两个搜索引擎拥有相同的名字。