0_0_14302589_19793.cpp: In function 'void dfs(int)':
0_0_14302589_19793.cpp:38:30: error: reference to 'next' is ambiguous
for(int v=head[u]; ~v; v=next[v])
^
0_0_14302589_19793.cpp:33:25: note: candidates are: int next [50100]
int du[Maxn],head[Maxn],next[Maxn],zv[Maxn],l;
^
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_14302589_19793.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_14302589_19793.cpp: In function 'int main()':
0_0_14302589_19793.cpp:100:13: error: reference to 'next' is ambiguous
next[i]=head[u];
^
0_0_14302589_19793.cpp:33:25: note: candidates are: int next [50100]
int du[Maxn],head[Maxn],next[Maxn],zv[Maxn],l;
^
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_14302589_19793.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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