Compilare: user.cpp: In function ‘void bfs()’: user.cpp:44:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:51:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:61:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:66:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v[vecin].size(); j++) { ^ user.cpp: In function ‘int main()’: user.cpp:83:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sol.size(); i++) ^