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

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發送短信 : LT code : decoding algorithm and its applications