Eroare de compilare: main.cpp: In function 'int main()': main.cpp:16:31: error: reference to 'prev' is ambiguous prev[i]=lg[lgmax-1]; ^~~~ main.cpp:5:47: note: candidates are: long long int prev [100002] long long int v[100002], lg[100002],a[100002],prev[100002]; ^~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/bits/stl_iterator_base_funcs.h:217:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^~~~ main.cpp:28:13: error: reference to 'prev' is ambiguous prev[i]=lg[dr-1]; ^~~~ main.cpp:5:47: note: candidates are: long long int prev [100002] long long int v[100002], lg[100002],a[100002],prev[100002]; ^~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/bits/stl_iterator_base_funcs.h:217:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^~~~ main.cpp:33:8: error: reference to 'prev' is ambiguous while(prev[i]) ^~~~ main.cpp:5:47: note: candidates are: long long int prev [100002] long long int v[100002], lg[100002],a[100002],prev[100002]; ^~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/bits/stl_iterator_base_funcs.h:217:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^~~~ main.cpp:36:8: error: reference to 'prev' is ambiguous i=prev[i]; ^~~~ main.cpp:5:47: note: candidates are: long long int prev [100002] Non zero exit status: 1