Compilare: user.cpp: In function ‘int BFS(int)’: user.cpp:69:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp:63:10: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,nod,nod2; ^ user.cpp: In function ‘void Flux()’: user.cpp:85:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vt.size();i++) ^ user.cpp:81:29: warning: variable ‘pas’ set but not used [-Wunused-but-set-variable] { int i,flux,aux,sol=0,nod,pas=0; ^ user.cpp: In function ‘void Solve()’: user.cpp:120:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) ^