Compilare: user.cpp: In function ‘int main()’: user.cpp:134:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<Points[i].size(); j++) ^ user.cpp:150:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<Points[i].size(); j++) ^ user.cpp:157:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<Vertex.size(); j++) ^