Migrated from Lutece 226 Check the Email

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Description

After tremendous last-year success not yet well-known, but already grown-up company Baidu decided to create a new software masterpiece -- a world-leading spam-filter.

Due to Your poor last year -- a world-leading spam-filter. Due to your poor last year project performance, you are given a small and boring task again. Your task is to write a simple email-validator.

Valid email address can be described as follows:

• <letter> ::= a|b|...|z|A|B|...|Z
• <symbol> ::= <letter>|0|1|...|9|_|-
• <word> ::= <symbol>|<symbol><word>
• <prefix> ::= <word>|<prefix>.<word>
• <domain> ::= <letter><letter>|<letter><letter><letter>
• <suffix> ::= <prefix>.<domain>
• <address> ::= <prefix>@<suffix>

Input

The first line of the input file contains integer number $N$ ($1\leq N\leq 100$) -- the number of email addresses to be checked. Each of the following $N$ lines contains one email address. Email address is the non-empty sequence of characters no more than $100$ characters long.

Output

For each address from the input write a separate line with the word YES, if the email address is valid and NO if it is not.

Samples

3 
abc@abc 
abc@abc.abc 
_@-.ru

NO 
YES 
YES

Resources

第四届北京邮电大学程序设计竞赛网络预赛