Compilare: user.cpp: In function ‘int bfs()’: user.cpp:30:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<G[nod].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:62:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i < G[102].size(); i++) ^ user.cpp:45:30: warning: unused variable ‘c’ [-Wunused-variable] int i, flow, fmin, x, y, c, nod; ^