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

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發送短信 : Clustering Permutations: New Techniques with Streaming Applications