0_0_21127999_2.cpp: In function 'void addedge(int, int)':
0_0_21127999_2.cpp:17:18: error: reference to 'next' is ambiguous
num++;to[num]=y;next[num]=head[x];head[x]=num;
^
0_0_21127999_2.cpp:11:25: note: candidates are: int next [110]
int head[maxn],to[maxn],next[maxn],size[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++/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_21127999_2.cpp:5:
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_21127999_2.cpp: In function 'void dfs(int)':
0_0_21127999_2.cpp:23:25: error: reference to 'next' is ambiguous
for (int p=head[x];p;p=next[p]) dfs(to[p]),size[x]+=size[to[p]];
^
0_0_21127999_2.cpp:11:25: note: candidates are: int next [110]
int head[maxn],to[maxn],next[maxn],size[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++/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_21127999_2.cpp:5:
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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