What does set<int>s[4] means?

Question

Does it create 4 sets inside a set?

Similar:
vector<int>v[4]

Answer 1

You are creating an C style array of std::set or std::vector object

Eg:-
set<int> s[2]
Is similar to
set<int> s0,s1;

Answer 2

Got it!

Thank you!