Eroare de compilare: user.cpp: In function ‘void get_angles()’: user.cpp:79:3: error: reference to ‘next’ is ambiguous next[i] = i+1; ^ user.cpp:15:25: note: candidates are: int next [100005] int st[maxn],used[maxn],next[maxn],prec[maxn],ind[calipers]; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/algorithm:61, from user.cpp:2: /usr/local/include/c++/4.8.0/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:82:2: error: reference to ‘next’ is ambiguous next[n] = 1; prec[1] = n; ^ user.cpp:15:25: note: candidates are: int next [100005] int st[maxn],used[maxn],next[maxn],prec[maxn],ind[calipers]; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/algorithm:61, from user.cpp:2: /usr/local/include/c++/4.8.0/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:86:24: error: reference to ‘next’ is ambiguous point a = A[i],o = A[next[i]],b = A[next[next[i]]]; ^ user.cpp:15:25: note: candidates are: int next [100005] int st[maxn],used[maxn],next[maxn],prec[maxn],ind[calipers]; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/algorithm:61, from user.cpp:2: /usr/local/include/c++/4.8.0/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:90:25: error: ‘b’ was not declared in this scope double angle2 = atan2(b.y-o.y,b.x-o.x); ^ user.cpp: In function ‘void get_start()’: user.cpp:116:21: error: reference to ‘next’ is ambiguous unghi[1] = atan2(A[next[p]].y-A[p].y,A[next[p]].x-A[p].x); ^ user.cpp:15:25: note: candidates are: int next [100005] int st[maxn],used[maxn],next[maxn],prec[maxn],ind[calipers]; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/algorithm:61, from user.cpp:2: