Compilare: main.cpp: In function 'void bfs(int)': main.cpp:18:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int i = 0; i < g[qn].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:39:9: warning: unused variable 'cnt' [-Wunused-variable] 39 | int cnt = 0; | ^~~