Codeforces Round 770(Div-2) Solutions || Problems A,B,C and D

Hey everyone! as always, here are the solutions to problems A, B, C and D of Codeforces Round 770(Div-2) If you are interested in attending free classes based on competitive programming and ask cp related and other doubts, then you are welcome to join my discord server. Link to the server: https://discord.gg/HGdtrN5mXe Contact me here : Linkedin : https://www.linkedin.com/in/harisam-s-351868113/ Instagram : https://www.instagram.com/sharmaharisam/ Codeforces : https://codeforces.com/profile/sharmaharisam #CP #Codeforces #Upsolving #Contest Timestamps : 0:00 - Intro 1:51 - A: Reverse and Concatenate 9:25 - B: Fortune Telling 18:18 - C: OKEA 28:28 - D: Finding Zero