0_0_18005478_17480.cpp: In function 'void addEdge(int, int)':
0_0_18005478_17480.cpp:57:5: error: reference to 'next' is ambiguous
next[e] = head[a];
^
0_0_18005478_17480.cpp:53:23: note: candidates are: int next [200010]
int head[N], v[N<<1], next[N<<1], e, vis[N];
^
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++/vector:60,
from 0_0_18005478_17480.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_18005478_17480.cpp: In function 'void findRoot(int, int)':
0_0_18005478_17480.cpp:10:51: error: reference to 'next' is ambiguous
#define ree(i, now) for(int i=head[now]; i!=-1; i=next[i])
^
0_0_18005478_17480.cpp:66:5: note: in expansion of macro 'ree'
ree(i, now) if(v[i]!=pre && !vis[v[i]]){
^
0_0_18005478_17480.cpp:53:23: note: candidates are: int next [200010]
int head[N], v[N<<1], next[N<<1], e, vis[N];
^
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++/vector:60,
from 0_0_18005478_17480.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_18005478_17480.cpp: In function 'void deep2Root(int, int, int)':
0_0_18005478_17480.cpp:10:51: error: reference to 'next' is ambiguous
#define ree(i, now) for(int i=head[now]; i!=-1; i=next[i])
^
0_0_18005478_17480.cpp:85:5: note: in expansion of macro 'ree'
ree(i, now) if(v[i]!=pre && !vis[v[i]]){
^
0_0_18005478_17480.cpp:53:23: note: candidates are: int next [200010]
int head[N], v[N<<1], next[N<<1], e, vis[N];
^
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++/vector:60,
from 0_0_18005478_17480.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_18005478_17480.cpp: In function 'void dfs(int, int, int)':
0_0_18005478_17480.cpp:10:51: error: reference to 'next' is ambiguous
#define ree(i, now) for(int i=head[now]; i!=-1; i=next[i])
^
0_0_18005478_17480.cpp:106:5: note: in expansion of macro 'ree'
ree(i, root) if(v[i]!=pre && !vis[v[i]]){
^
0_0_18005478_17480.cpp:53:23: note: candidates are: int next [200010]
int head[N], v[N<<1], next[N<<1], e, vis[N];
^
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++/vector:60,
from 0_0_18005478_17480.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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