Compilare: user.cpp: In function ‘int bfs()’: user.cpp:31:32: 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:64:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i < G[102].size(); i++) ^ user.cpp:46:12: warning: variable ‘flow’ set but not used [-Wunused-but-set-variable] int i, flow, fmin, x, y, c, nod; ^ user.cpp:46:30: warning: unused variable ‘c’ [-Wunused-variable] int i, flow, fmin, x, y, c, nod; ^