發送短信 : CREW SCHEDULING PROBLEMS IN THE AIRLINE INDUSTRY

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