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Basic Account Informations
UserID
May consist of A-Z, a-z, 0-9, _(not first), length between 3 and 20.
Password
Six characters or more.
Repeat Password
Six characters or more, the same to password.
Optional Informations
E-mail
Optional. Sample: xzz@fzu.edu.cn
Sex
Optional.
School
Optional.
Default Compiler
Optional.
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