Compilare: main.cpp: In function 'int main()': main.cpp:40:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (i = 0; i < vecini[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:20:21: warning: unused variable 'j' [-Wunused-variable] 20 | int n, m, g, i, j, x, y, c; | ^