Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:40:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[x].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:71:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < catun.size();i++) ^