In my opinion LeetCode Community should review there rewarding system as they should provide a max. of upto 5 LeetCoins upon successfully solving a practice problem as it will just motivate the problem solver and inorder to stop people to gain leetcoins by copy-pasting the solutions from discussion section, leetcode community should lock the solutions for the problem which can only be opened by spending the amount of leetcoins they can gain by solving that particular problem, so now if even they copy-paste the code from discussion section, still there won't be any increment in there coins as it will balance out the coins.