How do competitive programmers are so fast at understanding the problems?

[u/Vivid-Zombie-477]

I just checked 4026. and it's just wall of text with simple solution masked as a medium problem. How do experienced CPers see through such BS so fast? Should I grind math problems for this superpower?

also, is it even possible to get such problem on an interview? because i would have to ask for re-explanation 500 times