Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:20:9: error: reference to ‘prev’ is ambiguous prev[b[i]]=last; ^ user.cpp:7:28: note: candidates are: int prev [1000050] int N,M, a[NMAX], b[NMAX], prev[VMAX], dp[NMAX], l[NMAX], pos[VMAX]; ^ 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:25:15: error: reference to ‘prev’ is ambiguous if (l[prev[a[i]]] || a[i]==b[1]){ ^ user.cpp:7:28: note: candidates are: int prev [1000050] int N,M, a[NMAX], b[NMAX], prev[VMAX], dp[NMAX], l[NMAX], pos[VMAX]; ^ 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:29:25: error: reference to ‘prev’ is ambiguous dp[i]=l[prev[a[i]]]+(i-pos[prev[a[i]]]); ^ user.cpp:7:28: note: candidates are: int prev [1000050] int N,M, a[NMAX], b[NMAX], prev[VMAX], dp[NMAX], l[NMAX], pos[VMAX]; ^ 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:29:44: error: reference to ‘prev’ is ambiguous dp[i]=l[prev[a[i]]]+(i-pos[prev[a[i]]]); ^ user.cpp:7:28: note: candidates are: int prev [1000050]