Before writing the comparator function for sorting you must read this [blog [Your text to link here...](https://stackoverflow.com/questions/45929474/why-must-stdsort-compare-function-return-false-when-arguments-are-equal) ↵
, otherwise, it hurts you hard in the contest.[Your text to link here... [for more](https://codeforces.me/blog/entry/70237)
, otherwise, it hurts you hard in the contest.
