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View Compilation Error

0_0_24112214_23951.cpp: In function 'void addedge(int, int, long long int)':
0_0_24112214_23951.cpp:28:2: error: reference to 'next' is ambiguous
  next[++e]=head[u];head[u]=e;vet[e]=v;val[e]=cost;
  ^
0_0_24112214_23951.cpp:24:17: note: candidates are: int next [400009]
 int n,m,S,e,u,v,next[Lm],vet[Lm],head[Ln],val[Lm];
                 ^
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_24112214_23951.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_24112214_23951.cpp: In function 'void Dijkstra(int)':
0_0_24112214_23951.cpp:42:36: error: reference to 'next' is ambiguous
         for (int e=head[u];e!=-1;e=next[e])
                                    ^
0_0_24112214_23951.cpp:24:17: note: candidates are: int next [400009]
 int n,m,S,e,u,v,next[Lm],vet[Lm],head[Ln],val[Lm];
                 ^
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_24112214_23951.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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