Compilare: main.cpp: In function 'int check_point(int, int)': main.cpp:37:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void normalize(std::vector<int>&, std::unordered_map<int, int>&, std::set<int>&)': main.cpp:54:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < x.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:111:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < points.size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:128:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < points.size(); i++) ~~^~~~~~~~~~~~~~~