Eroare de compilare: user.cpp: In function ‘bool bfs()’: user.cpp:29:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp:37:17: error: reference to ‘prev’ is ambiguous prev[vecin] = nod; ^ user.cpp:13:55: note: candidates are: int prev [1024] int C[1024][1024],F[1024][1024],coada[1024],viz[1024],prev[1024]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^ user.cpp: In function ‘int main()’: user.cpp:70:32: error: reference to ‘prev’ is ambiguous fmin = min(fmin, C[prev[nod]][nod] - F[prev[nod]][nod]); ^ user.cpp:13:55: note: candidates are: int prev [1024] int C[1024][1024],F[1024][1024],coada[1024],viz[1024],prev[1024]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^ user.cpp:70:52: error: reference to ‘prev’ is ambiguous fmin = min(fmin, C[prev[nod]][nod] - F[prev[nod]][nod]); ^ user.cpp:13:55: note: candidates are: int prev [1024] int C[1024][1024],F[1024][1024],coada[1024],viz[1024],prev[1024]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^