發送短信 : How well can you know the edge of a quantum pyramid?

__    __    ______   _    _     _____     _____   
\ \\ / //  /_   _// | |  | ||  |  ___||  |__  //  
 \ \/ //    -| ||-  | |/\| ||  | ||__      / //   
  \  //     _| ||_  |  /\  ||  | ||__     / //__  
   \//     /_____// |_// \_||  |_____||  /_____|| 
    `      `-----`  `-`   `-`  `-----`   `-----`