so it seems like many people are struggling to be red
I THINK THIS because you cant even write code
learn from the true red, this is how we write code https://codeforces.me/contest/4/submission/203467882
also people like Um_nik cant even be 1st because like they dont even know wavelet tree??? like it is so easy just make a tree
also a lot of people struggle to get to YELLOW which is the easiest rate to achieve,, because they write recursive segmant tree?? honestly go learn how to code...