Do I continue to solve problems randomly on Codeforces -LRB- currently I am dealing with B 's Div2 -RRB- or is there a list sorted in someway -LRB- training regime -RRB- to raise my level faster ?
Is it normal for me in a Codeforces contest to be able to solve div 2 B , C , and D , but not be able to solve problem A ?