Compilare: main.cpp: In function 'int main()': main.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (i = 0; i < vecini[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:67:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (i = 0; i < rez.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp:19:18: warning: unused variable 'j' [-Wunused-variable] 19 | int n, m, i, j, x, y, a, b; | ^