D - Remove Two Letters #round 855 codeforces solution #Round #855 #div3

linked in: https://www.linkedin.com/in/esraa-mabrouk-72a24421b solution:https://github.com/Esraamabrouk2022/Codeforces/tree/main/Count%20the%20Number%20of%20Pairs for asking:https://curiouscat.me/EsraaMa16063467