Contribution #1497

Problem: en/13.2.11

Added Luis's English solution of 13.2.11

Editor: Luis Daniel Fernández Quintana ( @Luisito )

Time: June 22, 2024 at 11:51 PM

GitHub commit: 93b9ab2eccafc1435e95375e0357ee65593c5164

+130 -10 lines changed