Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:19:2: error: reference to ‘prev’ is ambiguous prev = 0; ^ user.cpp:8:34: note: candidates are: int prev int d[N * 3], din[N * 3][2], cr, prev, n, m; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /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:20:6: error: reference to ‘prev’ is ambiguous din[prev][1] = din[prev][n + 1] = din[prev][2 * n + 1] = 1; ^ user.cpp:8:34: note: candidates are: int prev int d[N * 3], din[N * 3][2], cr, prev, n, m; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /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:20:21: error: reference to ‘prev’ is ambiguous din[prev][1] = din[prev][n + 1] = din[prev][2 * n + 1] = 1; ^ user.cpp:8:34: note: candidates are: int prev int d[N * 3], din[N * 3][2], cr, prev, n, m; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /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:20:40: error: reference to ‘prev’ is ambiguous din[prev][1] = din[prev][n + 1] = din[prev][2 * n + 1] = 1; ^ user.cpp:8:34: note: candidates are: int prev int d[N * 3], din[N * 3][2], cr, prev, n, m; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /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:27:31: error: reference to ‘prev’ is ambiguous