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View Compilation Error

0_0_14043007_18242.cpp: In function 'void Add(int, int)':
0_0_14043007_18242.cpp:16:14: error: reference to 'next' is ambiguous
  e[tot] = v; next[tot] = g[u]; g[u] = tot ++;
              ^
0_0_14043007_18242.cpp:13:16: note: candidates are: int next [400001]
 int e[400001], next[400001], g[100001];
                ^
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++/algorithm:61,
                 from 0_0_14043007_18242.cpp:6:
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_14043007_18242.cpp: In function 'void Work()':
0_0_14043007_18242.cpp:48:33: error: reference to 'next' is ambiguous
    for (int k = g[tmpx]; k; k = next[k])
                                 ^
0_0_14043007_18242.cpp:13:16: note: candidates are: int next [400001]
 int e[400001], next[400001], g[100001];
                ^
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++/algorithm:61,
                 from 0_0_14043007_18242.cpp:6:
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_14043007_18242.cpp:68:30: error: reference to 'next' is ambiguous
    for (int j = g[x]; j; j = next[j])
                              ^
0_0_14043007_18242.cpp:13:16: note: candidates are: int next [400001]
 int e[400001], next[400001], g[100001];
                ^
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++/algorithm:61,
                 from 0_0_14043007_18242.cpp:6:
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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