Codeforces Round 640 (Div. 4) | All problems explanation

00:00 A Newcomews Beginners 03:57 B Newcomews Math 15:24 C Newcomews using math or Phase1 Using BS 22:46 D Newcomews Implemetation 31:01 E Newcomers Advanced 37:28 F Newcomers Advanced 49:32 G Newcomers What's App Group : https://chat.whatsapp.com/DcBdeTqLeSu3JJ90g3Xdp4 Div Link : https://codeforces.com/contest/1352 Contacts : email : [email protected] CF Handle : Ahmed_Zeus Linkedin : https://www.linkedin.com/in/ahmed-esmat-284a9524a/