Compilare: main.cpp: In function 'void bfs()': main.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<dik>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (i = 0; i < ad[a.val].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:45:18: warning: unused variable 'j' [-Wunused-variable] 45 | int n, m, i, j, a, b, c; | ^