Eroare de compilare: user.cpp: In function ‘bool solve(int)’: user.cpp:16:10: error: reference to ‘prev’ is ambiguous if (a[prev[l]]!=a[next[r]]) { aux=1; break; } ^ user.cpp:4:56: note: candidates are: int prev [10005] int i,j,n,v,nrs[10005],next[10005],a[10005],nrd[10005],prev[10005]; ^ 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/ostream:38, from /usr/include/c++/4.8/iostream:39, 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:16:22: error: reference to ‘next’ is ambiguous if (a[prev[l]]!=a[next[r]]) { aux=1; break; } ^ user.cpp:4:24: note: candidates are: int next [10005] int i,j,n,v,nrs[10005],next[10005],a[10005],nrd[10005],prev[10005]; ^ 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/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:17:6: error: reference to ‘next’ is ambiguous r=next[r]+nrd[next[r]]-1; ^ user.cpp:4:24: note: candidates are: int next [10005] int i,j,n,v,nrs[10005],next[10005],a[10005],nrd[10005],prev[10005]; ^ 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/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:17:18: error: reference to ‘next’ is ambiguous r=next[r]+nrd[next[r]]-1; ^ user.cpp:4:24: note: candidates are: int next [10005]