Eroare de compilare: main.cpp: In function 'int main()': main.cpp:25:9: error: reference to 'prev' is ambiguous 25 | prev = (i-1)%2; | ^~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:66, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/stl_iterator_base_funcs.h:224:5: note: candidates are: 'template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)' 224 | prev(_BidirectionalIterator __x, typename | ^~~~ main.cpp:10:43: note: 'int prev' 10 | int d[2][nmax], n, v[nmax], o[nmax], act, prev, minim = 190000000; | ^~~~ main.cpp:26:23: error: reference to 'prev' is ambiguous 26 | d[act][1] = d[prev][1]; | ^~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:66, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/stl_iterator_base_funcs.h:224:5: note: candidates are: 'template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)' 224 | prev(_BidirectionalIterator __x, typename | ^~~~ main.cpp:10:43: note: 'int prev' 10 | int d[2][nmax], n, v[nmax], o[nmax], act, prev, minim = 190000000; | ^~~~ main.cpp:29:31: error: reference to 'prev' is ambiguous 29 | d[act][j] = min(d[prev][j],d[act][j-1]); | ^~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:66, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/stl_iterator_base_funcs.h:224:5: note: candidates are: 'template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type)' 224 | prev(_BidirectionalIterator __x, typename | ^~~~ main.cpp:10:43: note: 'int prev' 10 | int d[2][nmax], n, v[nmax], o[nmax], act, prev, minim = 190000000; | ^~~~ Non zero exit status: 1