Can anyone please tell me why my submission to a problem gives "Exit code is 2147483647" error. I think I'm getting the error because I have used policy based data structures, but I'm not sure why. The link to my submission: https://mirror.codeforces.com/contest/1566/submission/128783408.

Does anyone have any idea when are they going to be uploaded?

Can anyone please have a look at my solution for problem D of AtCoder ABC 216 and tell me where did I go wrong? I have compared my solution to a correct solution by comparing multiple test cases but every one of them gives the same answer on both the solutions. The logic was also a lot similar to the successful submission but I'm not able to spot the error in my code. I have commented the code to explain my logic as well as I can.

Problem link: https://atcoder.jp/contests/abc216/tasks/abc216_d

My solution link: https://atcoder.jp/contests/abc216/submissions/25492717

People keep saying that competitive programming increases your problem solving and logical thinking skills, so I wanted to know specifically an example of a problem or a project where a competitive programmer would do better as compared to a person who hasn't done any competitive programming in his/her life.