發送短信

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

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發送短信 : Solvable join of graphs