Eroare de compilare: user.cpp: In function ‘void update_color(int, int, int)’: user.cpp:11:12: error: reference to ‘next’ is ambiguous if(next[i])i=next[i],--i; ^ user.cpp:6:43: note: candidates are: int next [1000001] int n,a[nmax],b[nmax],c[nmax],color[nmax],next[nmax]; ^ 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:3: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:11:22: error: reference to ‘next’ is ambiguous if(next[i])i=next[i],--i; ^ user.cpp:6:43: note: candidates are: int next [1000001] int n,a[nmax],b[nmax],c[nmax],color[nmax],next[nmax]; ^ 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:3: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:15:13: error: reference to ‘next’ is ambiguous next[i]=B+1; ^ user.cpp:6:43: note: candidates are: int next [1000001] int n,a[nmax],b[nmax],c[nmax],color[nmax],next[nmax]; ^ 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:3: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp: In function ‘int main()’: user.cpp:21:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("curcubeu.in","r",stdin); ^ user.cpp:22:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("curcubeu.out","w",stdout); ^ user.cpp:23:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&a[1],&b[1],&c[1]); ^