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Your level does not depend on how many questions you solve, but depends on how you think. When you are trying to solve a problem, you should first think independently. If you really don’t have any ideas, you should read others’solutions bit by bit rather than all at once, making sure you have as much as possibleYou made it yourself. After that, think carefully about why you can’t think of those parts that depend on the solution. Do not copy other people’s code. Everyone has his unique way of solving problems — Mao Xiao. Mao thought an interesting translation of “think before you leap” – “ThInk twice, code once “. Perhaps this is a motto worth writing on the computer desktop for students studying informatics.