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View Compilation Error

0_0_33759358_3913.cpp: In function 'void Add(int, int, int)':
0_0_33759358_3913.cpp:11:47: error: reference to 'next' is ambiguous
 void Add(int x,int y,int z){w[tot]=z,v[tot]=y,next[tot]=first[x],first[x]=tot++;}
                                               ^
0_0_33759358_3913.cpp:8:14: note: candidates are: int next [1034964]
 int first[M],next[M],v[M],w[M],vis[M/16],tot,T,cnt;
              ^
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_33759358_3913.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_33759358_3913.cpp: In function 'bool tell()':
0_0_33759358_3913.cpp:18:33: error: reference to 'next' is ambiguous
         for(int i=first[t];~i;i=next[i])
                                 ^
0_0_33759358_3913.cpp:8:14: note: candidates are: int next [1034964]
 int first[M],next[M],v[M],w[M],vis[M/16],tot,T,cnt;
              ^
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_33759358_3913.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_33759358_3913.cpp: In function 'int zeng(int, int)':
0_0_33759358_3913.cpp:27:34: error: reference to 'next' is ambiguous
     for(int i=first[x];y>r&&~i;i=next[i])
                                  ^
0_0_33759358_3913.cpp:8:14: note: candidates are: int next [1034964]
 int first[M],next[M],v[M],w[M],vis[M/16],tot,T,cnt;
              ^
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_33759358_3913.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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