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

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發送短信 : Translational tilings by a polytope, with multiplicity