Compilare: main.cpp: In function 'long long int check_point(long long int, long long int)': main.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void normalize(std::vector<long long int>&, std::unordered_map<long long int, long long int>&, std::set<long long int>&)': main.cpp:55:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < x.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int32_t main()': main.cpp:112:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < points.size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:129:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < points.size(); i++) ~~^~~~~~~~~~~~~~~