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 _    _     ______    _____     _____             
| || | ||  /_   _//  |__  //   |  ___||     ___   
| || | ||   -| ||-     / //    | ||__      /   || 
| \\_/ ||   _| ||_    / //__   | ||__     | [] || 
 \____//   /_____//  /_____||  |_____||    \__ || 
  `---`    `-----`   `-----`   `-----`      -|_|| 
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發送短信 : Zeta polynomials of type IV codes over rings of order four