0_0_16366529_2742.cpp: In function 'void add(int, int)':
0_0_16366529_2742.cpp:9:14: error: reference to 'next' is ambiguous
en[++tot]=b,next[tot]=fa[a],fa[a]=tot;
^
0_0_16366529_2742.cpp:7:15: note: candidates are: int next [30005]
int tot,en[M],next[M],fa[M];
^
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++/algorithm:61,
from 0_0_16366529_2742.cpp:3:
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_16366529_2742.cpp: In function 'int bfs(int)':
0_0_16366529_2742.cpp:18:33: error: reference to 'next' is ambiguous
for(f[u=q[h++]]=0,i=fa[u];i;i=next[i])
^
0_0_16366529_2742.cpp:7:15: note: candidates are: int next [30005]
int tot,en[M],next[M],fa[M];
^
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++/algorithm:61,
from 0_0_16366529_2742.cpp:3:
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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