Compilare: user.cpp: In function ‘int main()’: user.cpp:20:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<G[xs].size(); i++) cmin[G[xs][i].first]=G[xs][i].second; ^ user.cpp: In function ‘void cost()’: user.cpp:49:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<G[x].size(); j++) ^ user.cpp:47:20: warning: ‘pozmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] m[pozmin]=1; ^