Compilare: main.cpp: In function 'void bfs(int, int*)': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (i = 0; i < ad[a].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:40: warning: unused variable 'p' [-Wunused-variable] 37 | int m, a, b, x, y, i, minn = 9999, p = 0; | ^