https://play.acast.com/s/6304d1bcd0ffaf0012831576
http://th.cpp.sh/9az2kh
https://pastebin.com/cq3nAbS3
https://dotnetfiddle.net/D2vdyR
https://ideone.com/Vm5qQU
https://pasteio.com/xFQXgaTRjp5M
https://paiza.io/projects/Kn2cL1y_P-l1vU1oN3bLZA?language=php
https://ide.geeksforgeeks.org/a7ce8433-0b94-4ec9-85f8-0a761a5d8793