Compilare: main.cpp: In function 'void parcurgere(int, int)': main.cpp:20:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for (int j = 0; j < vecini[x].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:35:12: warning: unused variable 'j' [-Wunused-variable] 35 | int i, j, u, v, w, suma = 0; | ^