Has anyone here tried codechef?

Question

they have very good problems, I have been doing it for a while now and I find it really amazing if anyone has tried it I want to know the logic behind the rainbowa problem

Answer 1

<del>codewars ftw</del>

Answer 2

I not want to try
I have
Sololearn
already

Answer 3

that doesn't mean you can't use any other websites or apps
p.s the more you practice the better you get at coding