Compilare: main.cpp: In function 'int main()': main.cpp:176:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 176 | for (j = 0; j < upperHull.size(); j++) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp:198:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 198 | for (i = 0; i < lowerHull.size() / 2 - 1; i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~