Hi everyone . I practice from another account and can do 1600 rated problem by myself. Sometimes I cannot and then I read editorial. But in the contest time my most time is eaten by either B or A or any C that needs a quick observation . How should I keep practicing ? Normally I pick 1400 to 1700 problems and solve . But I don't know how to get the A,B in contest time fastly . Once I solved lot of A , B . and after that I could not solve C in the contest . How I can practice more efficiently or what mindset I should build in myself ?