Problem	hammeringnails
User	Taken
Submission Time	2026-11-04 11:41:32
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

hammeringnails.cpp: In function ‘int main()’:
hammeringnails.cpp:12:7: error: declaration does not declare anything [-fpermissive]
12 | std::set<int>;
| ^~~~~~~~