Compilare: main.cpp: In member function 'std::vector<int>& Graph::operator[](int)': main.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(index > this->adjList.size() || index < 0){ | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Solution::Ghizi()': main.cpp:218:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 218 | for(int i = 0; i < vol.size(); ++i){ | ~~^~~~~~~~~~~~ main.cpp: In member function 'void Solution::Paznici()': main.cpp:288:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 288 | for(int j = 0; j < a.size(); ++j){ | ~~^~~~~~~~~~