Compilare: main.cpp: In member function 'void Graf::BFS(int)': main.cpp:61:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i = 0; i < A[x].size(); i++){ | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:9: warning: unused variable 'x' [-Wunused-variable] 88 | int x,y; | ^ main.cpp:88:11: warning: unused variable 'y' [-Wunused-variable] 88 | int x,y; | ^