John and Swaps
this video is powered by icpc menofya
instructor: tawfik shalsh
content
https://github.com/tawfik-s/competati...
proplem link
https://codeforces.com/group/nMgBPsUR...
https://github.com/tawfik-s
https://t.me/tawfik_blog
githup
https://github.com/tawfik-s