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

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發送短信 : Weaving Mathematics