https://pastebin.com/RWP3j0HN
http://cpp.sh/4fjby
https://ide.geeksforgeeks.org/aa4ba2d7-643a-4200-86b1-dccf2f6d66a4
https://paiza.io/projects/7I61Zq9DYPLiTVgI8NU8xQ?language=php
https://pastebin.com/wxGtjdG1
http://cpp.sh/32pf4
https://ide.geeksforgeeks.org/30343b0e-4963-40b0-95a8-5f87e042c6df