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View Compilation Error

0_0_19630966_29720.cpp: In function 'bool Bfs()':
0_0_19630966_29720.cpp:39:26: error: reference to 'next' is ambiguous
      for (k=cur[w]; k; k=next[k])
                          ^
0_0_19630966_29720.cpp:11:13: note: candidates are: int next [656000]
 int last[M],next[M << 4],to[M << 4],dis[M << 4],lev[M],cur[M],mark[N][N], c;
             ^
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++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_19630966_29720.cpp:1:
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_19630966_29720.cpp: In function 'int Dinic(const int&, const int&)':
0_0_19630966_29720.cpp:53:27: error: reference to 'next' is ambiguous
  for (int &k=cur[w]; k; k=next[k])
                           ^
0_0_19630966_29720.cpp:11:13: note: candidates are: int next [656000]
 int last[M],next[M << 4],to[M << 4],dis[M << 4],lev[M],cur[M],mark[N][N], c;
             ^
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++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_19630966_29720.cpp:1:
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_19630966_29720.cpp: In function 'void add(const int&, const int&, const int&)':
0_0_19630966_29720.cpp:71:2: error: reference to 'next' is ambiguous
  next[++top]=last[x]; last[x]=top; to[top]=y; dis[top]=z;
  ^
0_0_19630966_29720.cpp:11:13: note: candidates are: int next [656000]
 int last[M],next[M << 4],to[M << 4],dis[M << 4],lev[M],cur[M],mark[N][N], c;
             ^
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++/bits/char_traits.h:39,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_19630966_29720.cpp:1:
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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