0_0_20051586_11697.cpp: In function 'void add(int, int)':
0_0_20051586_11697.cpp:11:2: error: reference to 'next' is ambiguous
next[cnt]=head[a];
^
0_0_20051586_11697.cpp:5:20: note: candidates are: int next [50010]
int val[50010],cnt,next[50010],head[50010],size[50010],sum[200010],lazy[200010],T,n,root,q;
^
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_20051586_11697.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_20051586_11697.cpp: In function 'void dfs(std::vector<int>&, int)':
0_0_20051586_11697.cpp:17:25: error: reference to 'next' is ambiguous
for (int i=head[u];i;i=next[i])
^
0_0_20051586_11697.cpp:5:20: note: candidates are: int next [50010]
int val[50010],cnt,next[50010],head[50010],size[50010],sum[200010],lazy[200010],T,n,root,q;
^
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_20051586_11697.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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