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

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發送短信 : A fast and compact algorithm for large-scale TSP optimization