Compilare: main.cpp: In function 'void BFS(int)': main.cpp:24:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 1; k < adiac[nod].size(); k++) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i < adiac.size(); i++) { ~~^~~~~~~~~~~~~~ main.cpp:60:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < sol.size(); i++) ~~^~~~~~~~~~~~