||The editorial for this round written by espr1t is now available in the Wiki.
As it's in the Wiki, there's a possibility to improve it. It can be language correction, wording improvement or additional explanation in some parts, your additional comments, description of alternative solutions, etc. If you want to improve the wording of editorial writer or correct some language error, please feel free to put your change over the original text. And if you wish to add a comment or describe another approach, there's a section for this at the bottom of each problem.
Before editing, please be sure to check the following guidelines.
After approximately 1 month passes, we'll review the editorial once again, clean it a bit if necessary and make that version final (i.e. its editing will no longer be possible).