Compilare: user.cpp: In function ‘int b_ford()’: user.cpp:614:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[nod].size();j++) ^ user.cpp:599:17: warning: unused variable ‘aleg’ [-Wunused-variable] int i,j,nod,aleg,nh; ^ user.cpp:599:22: warning: unused variable ‘nh’ [-Wunused-variable] int i,j,nod,aleg,nh; ^ user.cpp: In function ‘void bellmanFord()’: user.cpp:666:18: warning: overflow in implicit constant conversion [-Woverflow] int cf = oo; ^ user.cpp:635:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘bool bf()’: user.cpp:694:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[start].size();i++) ^ user.cpp: In function ‘void solve()’: user.cpp:715:7: warning: unused variable ‘i’ [-Wunused-variable] int i,aleg; ^ user.cpp:715:9: warning: unused variable ‘aleg’ [-Wunused-variable] int i,aleg; ^ user.cpp:723:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bal2.out","w",stdout); ^