Please add such a feature in magic so that we can also change our rating to whatever we want upto 10th January

Isn't it great?? comment down your thoughts below

I stucked in this question for long now I tried in almost all possible cases but still it kept showing wrong answer on test#2 please help, whats wrong in my code or you can give some strong test cases.

https://mirror.codeforces.com/contest/1400/submission/91015416

Hey everyone I am stuck in this problem Find a non empty subset in an array of N integers such that sum of elements of subset is divisible by N It's also available on gfg link... but explanation is not quiet clear !! it will be really helpful if some-one explains approach to me.