0_0_13424483_7041.cpp: In function 'void add(int, int)':
0_0_13424483_7041.cpp:14:2: error: reference to 'next' is ambiguous
next[++cnt]=son[x]; son[x]=cnt; ed[cnt]=y;
^
0_0_13424483_7041.cpp:8:9: note: candidates are: int next [500001]
int cnt,next[500001],son[500001],ed[500001];
^
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_13424483_7041.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_13424483_7041.cpp: In function 'void dfs(int)':
0_0_13424483_7041.cpp:20:24: error: reference to 'next' is ambiguous
for (int j=son[u];j;j=next[j])
^
0_0_13424483_7041.cpp:8:9: note: candidates are: int next [500001]
int cnt,next[500001],son[500001],ed[500001];
^
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_13424483_7041.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_13424483_7041.cpp: In function 'int main()':
0_0_13424483_7041.cpp:204:121: error: reference to 'next' is ambiguous
for (int i=1;i<=500000;i++) zson[i]=root[i]=len[i]=son[i]=wh[i]=id[i]=top[i]=fa[i]=size[i]=h[i]=ff[i]=lazy_[i]=vis[i]=next[i]=ed[i]=c1[i]=c2[i]=lazy[i]=f1[i]=f2[i]=lson[i]=rson[i]=0;
^
0_0_13424483_7041.cpp:8:9: note: candidates are: int next [500001]
int cnt,next[500001],son[500001],ed[500001];
^
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_13424483_7041.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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