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View Compilation Error

0_0_32847835_30883.cpp: In function 'void addedge(int, int, double)':
0_0_32847835_30883.cpp:31:30: error: reference to 'next' is ambiguous
     ver[edge]=v,cost[edge]=c,next[edge]=head[u],head[u]=edge++;
                              ^
0_0_32847835_30883.cpp:11:13: note: candidates are: int next [100000]
 int ver[mm],next[mm];
             ^
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_32847835_30883.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_32847835_30883.cpp: In function 'void spfa()':
0_0_32847835_30883.cpp:40:44: error: reference to 'next' is ambiguous
         for(i=head[u=q[l]],vis[u]=0;i>=0;i=next[i])
                                            ^
0_0_32847835_30883.cpp:11:13: note: candidates are: int next [100000]
 int ver[mm],next[mm];
             ^
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_32847835_30883.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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