Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:33:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<a[nod].size(); ++i) ^ user.cpp: In function ‘void DFSt(int)’: user.cpp:47:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<at[nod].size(); ++i) ^ user.cpp: In function ‘void Scrie()’: user.cpp:86:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<solutie.size(); ++i) g<<solutie[i].first<<" "<<solutie[i].second<<"\n"; ^