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

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發送短信 : Characterization of completely k-magic regular graphs