Compilare: main.cpp: In function 'void BFS(int)': main.cpp:39:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[Nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < drum.size(); i++) ~~^~~~~~~~~~~~~