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

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發送短信 : A note on the monotonicity of the ES algorithm