Text this: Incremental maintenance of quotient cube for median

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