Compilare: main.cpp: In function 'void bfs(int)': main.cpp:28:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < muo[aux].size(); i++) ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:15: warning: unused variable 'i' [-Wunused-variable] int n, m, i, j, x, y; ^ main.cpp:61:18: warning: unused variable 'j' [-Wunused-variable] int n, m, i, j, x, y; ^