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  ______   _    _     _  __   __   __    _____   
 /_   _// | || | ||  | |/ //  \ \\/ //  /  ___|| 
   | ||   | || | ||  | ' //    \ ` //  | // __   
  _| ||   | \\_/ ||  | . \\     | ||   | \\_\ || 
 /__//     \____//   |_|\_\\    |_||    \____//  
 `--`       `---`    `-` --`    `-`'     `---`

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發送短信 : Colourings of Cyclotomic Integers with Class Number One