Compilare: user.cpp: In member function ‘void PushRelabel::Relabel(int)’: user.cpp:59:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[v].size(); i++) ^ user.cpp: In member function ‘void PushRelabel::Discharge(int)’: user.cpp:67:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; excess[v] > 0 && i < G[v].size(); i++) Push(G[v][i]); ^ user.cpp: In member function ‘LL PushRelabel::GetMaxFlow(int, int)’: user.cpp:81:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[s].size(); i++) { ^ user.cpp:94:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[s].size(); i++) totflow += G[s][i].flow; ^