View Compilation Error

0_0_25749956_22086.cpp: In function 'int dfs(int, int)':
0_0_25749956_22086.cpp:13:12: error: reference to 'next' is ambiguous
   int nx=x+next[i][0],ny=y+next[i][1];
            ^
0_0_25749956_22086.cpp:7:5: note: candidates are: int next [4][2]
 int next[4][2]={-1,0,1,0,0,-1,0,1};
     ^
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_25749956_22086.cpp:2:
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_25749956_22086.cpp:14:20: error: 'ny' was not declared in this scope
   if(nx>=1&&nx<=n&&ny>=1&&ny<=m&&map[nx][ny]) ans--;
                    ^