I am a junior high school student in China, And I'm the leader of our team of Grade 1.
But now I stuck in a big problem: I can't solve the problem quickly and correctly in Codeforces Round.
I think I can't understand the tricks of solve a Codeforces Round's problem, but I can solve lot of troublesome data struct problem just like This .
What should I do next to improve my skills?
I need helps.