Compilare: user.cpp: In function ‘void BFS()’: user.cpp:29:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘void Flux()’: user.cpp:44:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[t].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:84:32: warning: overflow in implicit constant conversion [-Woverflow] c[i][i+n]=c[i+n][i]=inf; ^ user.cpp:74:13: warning: unused variable ‘num’ [-Wunused-variable] { int i,x,y,num; ^