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  ______   _    _    _    _    __   __   __   __  
 /_   _// | || | || | \  / ||  \ \\/ //  \ \\/ // 
   | ||   | || | || |  \/  ||   \ ` //    \   //  
  _| ||   | \\_/ || | .  . ||    | ||     / . \\  
 /__//     \____//  |_|\/|_||    |_||    /_//\_\\ 
 `--`       `---`   `-`  `-`     `-`'    `-`  --`

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發送短信 : Incentivizing collaboration in a competition