Hello, I was introduced to CP a few months back by a friend, and from then to now I would message him any questions I had. Of course, it's not a good habit to rely on others, and nowadays I don't want to bother him because I'm no longer a true beginner(although my skill says otherwise). I'm not sure why, but I find editorials too lacking when it comes to explanations through words, as many solutions write things like, "We approach this problem greedily" and then jumps straight into math equations. Greedy is too broad of a subject for someone as bad as me, and I would like to see more logic and motivation behind these solutions. Maybe I'm just really horrible at understanding things, but I'd like to find a way to improve and understand how to solve these problems I'm stuck on without bothering anyone. Any suggestions?

Hello, I've been attempting to solve this question: https://mirror.codeforces.com/contest/1666/problem/D

So far, I've deduced that it is possible to simulate the question to construct an answer, which will be compared with the second string. However, I'm unsure on what case or cases will cause my code to fail, but I'm assuming it has something to do with the .remove() function.

Any help would be appreciated.

Thanks!

I am aware that many codeforces users are not from the United States, however, for the ones that are, do you think that the difficulty gap of consecutive years is getting bigger? It seems that USACO is somewhat (albeit slowly) mirroring the AMCs, where students' scores do not increase very much throughout the years even though they learned much new material due to the huge difficulty gap. Also, please do not discuss the ongoing USACO competition.