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 _    _     _____              _    _             
| || | ||  |  ___||   ____    | || | ||   ____    
| || | ||  | ||__    |    \\  | || | ||  |    \\  
| \\_/ ||  | ||__    | [] ||  | \\_/ ||  | [] ||  
 \____//   |_____||  |  __//   \____//   |  __//  
  `---`    `-----`   |_|`-`     `---`    |_|`-`   
                     `-`                 `-`

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發送短信 : Kempe mechanism in spherical space