Compilare: main.cpp: In function 'int main()': main.cpp:51:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i = 0; i < coordonate.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:53:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int j = i + 1; j < coordonate.size(); j++) | ~~^~~~~~~~~~~~~~~~~~~