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View Compilation Error

0_0_18888268_19678.cpp: In function 'long double BFS()':
0_0_18888268_19678.cpp:128:32: error: reference to 'next' is ambiguous
   for (int i = last[x]; i; i = next[i]) {
                                ^
0_0_18888268_19678.cpp:23:14: note: candidates are: int next [640000]
 int e[MAXE], next[MAXE];
              ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_18888268_19678.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/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
     ^
0_0_18888268_19678.cpp: In function 'void Add(int, int, long double)':
0_0_18888268_19678.cpp:145:2: error: reference to 'next' is ambiguous
  next[total] = last[x];
  ^
0_0_18888268_19678.cpp:23:14: note: candidates are: int next [640000]
 int e[MAXE], next[MAXE];
              ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_18888268_19678.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/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
     ^


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