Compilare: main.cpp: In function 'int main()': main.cpp:33:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i = 0; i < adj_list[crt].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:69:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for(int i = 0; i < result.size(); i++) cout<<result[i]<<endl; | ~~^~~~~~~~~~~~~~~ main.cpp:25:13: warning: unused variable 'q_top' [-Wunused-variable] 25 | int q_top = 0, q_end = 0; | ^~~~~ main.cpp:25:24: warning: unused variable 'q_end' [-Wunused-variable] 25 | int q_top = 0, q_end = 0; | ^~~~~