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           _    _    _    _    __   __   ______   
  ____    | || | || | \  / ||  \ \\/ // |      \\ 
 |    \\  | || | || |  \/  ||   \ ` //  |  --  // 
 | [] ||  | \\_/ || | .  . ||    | ||   |  --  \\ 
 |  __//   \____//  |_|\/|_||    |_||   |______// 
 |_|`-`     `---`   `-`  `-`     `-`'   `------`  
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發送短信 : Using constraint programming for split delivery scheduling in scarce resource environment