Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:28:21: error: reference to ‘prev’ is ambiguous prev[a[j].p] = a[i].p; ^ user.cpp:5:41: note: candidates are: int prev [4002] int n, nr[4002], poz[4002], best[4002], prev[4002], st[4002]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /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:44:13: error: reference to ‘prev’ is ambiguous p = prev[p]; ^ user.cpp:5:41: note: candidates are: int prev [4002] int n, nr[4002], poz[4002], best[4002], prev[4002], st[4002]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /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:15:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi3.in", "r", stdin); ^ user.cpp:16:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi3.out", "w", stdout); ^ user.cpp:17:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:19:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a[i].l, &a[i].g), a[i].p = i; ^