Today's contest was tough for me in every div2 I took part I could solve A in 5 minutes,today I solved it after 35 minutes,and I started to solve B I think I got it,but it gave me TLE and second chance is wrong answer on 2 pretest, After this I had no motivation and I left. Before this I started CSES sorting and searching problems, do you think they will help? I really want to improve my cp skills,what should I do to solve div2 A,B after cses sorting and searching problems??