Eroare de compilare: main.cpp: In function 'int main()': main.cpp:47:13: error: reference to 'prev' is ambiguous prev[l][c]=prev[l-1][c]; ^~~~ main.cpp:8:81: note: candidates are: int prev [1002][1002] int n, m, a[1002][1002], b[1002][1002], x[1002][1002], mini=INF, s[1002][1002], prev[1002][1002], next[1002][1002]; ^~~~ 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:47:24: error: reference to 'prev' is ambiguous prev[l][c]=prev[l-1][c]; ^~~~ main.cpp:8:81: note: candidates are: int prev [1002][1002] int n, m, a[1002][1002], b[1002][1002], x[1002][1002], mini=INF, s[1002][1002], prev[1002][1002], next[1002][1002]; ^~~~ 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:48:45: error: reference to 'prev' is ambiguous if(b[l][c]>=mini&&x[l][c]<mini) prev[l][c]=l; ^~~~ main.cpp:8:81: note: candidates are: int prev [1002][1002] int n, m, a[1002][1002], b[1002][1002], x[1002][1002], mini=INF, s[1002][1002], prev[1002][1002], next[1002][1002]; ^~~~ 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:53:13: error: reference to 'next' is ambiguous next[l][c]=next[l+1][c]; ^~~~ main.cpp:8:99: note: candidates are: int next [1002][1002] Non zero exit status: 1