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

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發送短信 : Ordinal optimization with subset selection rule