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

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發送短信 : On an extension of shapiro's cyclic inequality