I think I have been falsely plagiarised in the previous div1+div2 round and an accusation had been made that I copied my solutions for A,B and C questions from SanathSalampuria . I think I have falsely plagiarised due to maybe the fact that both of us use the same pre-code writeup/template. I am willing to defend each of my solutions. I dont know how to tag so, I will mention profile links of author and one more. https://mirror.codeforces.com/profile/MikeMirzayanov https://mirror.codeforces.com/profile/duality