發送短信 : Robust numeric set watermarking: Numbers don't lie

 _    _     ______   ______    _    _     ____    
| |  | ||  /_   _// |      \\ | || | ||  |  _ \\  
| |/\| ||   -| ||-  |  --  // | || | ||  | |_| || 
|  /\  ||   _| ||_  |  --  \\ | \\_/ ||  | .  //  
|_// \_||  /_____// |______//  \____//   |_|\_\\  
`-`   `-`  `-----`  `------`    `---`    `-` --`