Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:33:9: error: reference to ‘prev’ is ambiguous prev[i]=t[k-1]; ^ user.cpp:9:32: note: candidates are: int prev [100002] int n, m, q, a[MAXN], t[MAXN], prev[MAXN], sol[MAXN]; ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:66:0, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/sstream:38, from /usr/include/c++/5/complex:45, from /usr/include/c++/5/ccomplex:38, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/5/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:37:24: error: reference to ‘prev’ is ambiguous for(i=t[m]; i>0; i=prev[i]) ^ user.cpp:9:32: note: candidates are: int prev [100002] int n, m, q, a[MAXN], t[MAXN], prev[MAXN], sol[MAXN]; ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:66:0, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/sstream:38, from /usr/include/c++/5/complex:45, from /usr/include/c++/5/ccomplex:38, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/5/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 ^