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

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Text this: Về ước lượng metric Kobayashi