0_0_13911562_16626.cpp: In function 'void add(int, int)':
0_0_13911562_16626.cpp:17:3: error: reference to 'next' is ambiguous
next[++mm]=son[x];
^
0_0_13911562_16626.cpp:10:5: note: candidates are: int next [200010]
int next[N*2+10],son[N+10],ed[N*2+10];
^
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_13911562_16626.cpp:2:
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_13911562_16626.cpp: In function 'void dfs1(int)':
0_0_13911562_16626.cpp:25:25: error: reference to 'next' is ambiguous
for (int i=son[x];i;i=next[i]){
^
0_0_13911562_16626.cpp:10:5: note: candidates are: int next [200010]
int next[N*2+10],son[N+10],ed[N*2+10];
^
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_13911562_16626.cpp:2:
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_13911562_16626.cpp: In function 'void dfs2(int)':
0_0_13911562_16626.cpp:43:25: error: reference to 'next' is ambiguous
for (int i=son[x];i;i=next[i]){
^
0_0_13911562_16626.cpp:10:5: note: candidates are: int next [200010]
int next[N*2+10],son[N+10],ed[N*2+10];
^
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_13911562_16626.cpp:2:
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_13911562_16626.cpp: In function 'int main()':
0_0_13911562_16626.cpp:100:33: error: 'memset' was not declared in this scope
memset(son,0,sizeof(son));
^
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