Text this: Optimal lot sizing model with reprocessing of defective output

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