0_0_20980162_14399.cpp: In function 'void add(int, int)':
0_0_20980162_14399.cpp:20:3: error: reference to 'next' is ambiguous
next[++cnt]=point[x];point[x]=cnt;
^
0_0_20980162_14399.cpp:9:31: note: candidates are: int next [400020]
int n,q[N],m,x,y,a,b,point[N],next[M<<1],cnt;
^
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_20980162_14399.cpp:1:
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_20980162_14399.cpp: In function 'void dp()':
0_0_20980162_14399.cpp:30:29: error: reference to 'next' is ambiguous
for (int i=point[u];i;i=next[i]){
^
0_0_20980162_14399.cpp:9:31: note: candidates are: int next [400020]
int n,q[N],m,x,y,a,b,point[N],next[M<<1],cnt;
^
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_20980162_14399.cpp:1:
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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