Compilare: user.cpp: In function ‘void LantNou(int)’: user.cpp:72:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < a[nod].size(); i++) ^ user.cpp:86:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < a[x].size(); i++) ^ user.cpp: In function ‘int Solve()’: user.cpp:132:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < a[i].size(); j++) ^ user.cpp:146:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < a[nod].size(); j++) ^