Compilare: main.cpp: In function 'int bfs()': main.cpp:22:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[ Q[p] ].size();i++){ ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:54:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<L[dest].size(); i++) { ~^~~~~~~~~~~~~~~