Try to understand the Top 10 people‘s submissions no matter what language they used

I am participating in the LeetCode weekly contest regularly. I found a pretty helpful way to improve myself is understanding the top 10 people’s solutions no matter what languages they are using. If they can figure out the solutions in a very short time, it means the problem is well known and is supposed to be solved in a short time. If I don’t know it, learn from them, and try to fully understand their thinking processes. It will help.