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View Compilation Error

0_0_20960240_23885.cpp: In function 'void add(int, int)':
0_0_20960240_23885.cpp:17:9: error: reference to 'next' is ambiguous
  tot++; next[tot]=point[x]; point[x]=tot; v[tot]=y; 
         ^
0_0_20960240_23885.cpp:10:21: note: candidates are: int next [40030]
 int n,m,point[N*10],next[N*10],v[N*10],dis[N*10],vis[N*10],ans,inf,tot;
                     ^
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_20960240_23885.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_20960240_23885.cpp: In function 'void bfs()':
0_0_20960240_23885.cpp:90:29: error: reference to 'next' is ambiguous
   for (int i=point[now];i;i=next[i]){
                             ^
0_0_20960240_23885.cpp:10:21: note: candidates are: int next [40030]
 int n,m,point[N*10],next[N*10],v[N*10],dis[N*10],vis[N*10],ans,inf,tot;
                     ^
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_20960240_23885.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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