0_0_13273241_13985.cpp: In function 'void add(int, int)':
0_0_13273241_13985.cpp:22:14: error: reference to 'next' is ambiguous
to[++tot]=y;next[tot]=head[x];head[x]=tot;
^
0_0_13273241_13985.cpp:16:14: note: candidates are: int next [600010]
int to[maxn],next[maxn],head[maxn],fa[maxn];
^
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_13273241_13985.cpp:4:
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_13273241_13985.cpp:23:14: error: reference to 'next' is ambiguous
to[++tot]=x;next[tot]=head[y];head[y]=tot;
^
0_0_13273241_13985.cpp:16:14: note: candidates are: int next [600010]
int to[maxn],next[maxn],head[maxn],fa[maxn];
^
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_13273241_13985.cpp:4:
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_13273241_13985.cpp: In function 'void dfs(int)':
0_0_13273241_13985.cpp:29:24: error: reference to 'next' is ambiguous
for(int i=head[x];i;i=next[i])
^
0_0_13273241_13985.cpp:16:14: note: candidates are: int next [600010]
int to[maxn],next[maxn],head[maxn],fa[maxn];
^
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_13273241_13985.cpp:4:
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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