Compilare: main.cpp: In member function 'void Graph::printGraph()': main.cpp:77:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(j = 0; j < adlist[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'Graph Graph::transpose()': main.cpp:150:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 150 | for(j = 0; j < adlist[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::stronglyConnectedComponents()': main.cpp:176:9: warning: unused variable 'i' [-Wunused-variable] 176 | int i, j; | ^ main.cpp:176:12: warning: unused variable 'j' [-Wunused-variable] 176 | int i, j; | ^ main.cpp: In function 'int main()': main.cpp:201:9: warning: unused variable 'i' [-Wunused-variable] 201 | int i, first, n, m; | ^ main.cpp:201:12: warning: unused variable 'first' [-Wunused-variable] 201 | int i, first, n, m; | ^~~~~