0_0_27955779_32182.cpp: In function 'void add(int, int)':
0_0_27955779_32182.cpp:14:2: error: reference to 'next' is ambiguous
next[++tot]=first[x],first[x]=tot,to[tot]=y,du[y]++;
^
0_0_27955779_32182.cpp:9:14: note: candidates are: int next [100050]
int first[N],next[N],to[N],tot;
^
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_27955779_32182.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_27955779_32182.cpp: In function 'void init()':
0_0_27955779_32182.cpp:18:36: error: reference to 'next' is ambiguous
for(int i=1;i<=N-50;i++) first[i]=next[i]=to[i]=0; tot=0;
^
0_0_27955779_32182.cpp:9:14: note: candidates are: int next [100050]
int first[N],next[N],to[N],tot;
^
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_27955779_32182.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_27955779_32182.cpp: In function 'void topsort()':
0_0_27955779_32182.cpp:47:26: error: reference to 'next' is ambiguous
for(int i=first[x];i;i=next[i]){
^
0_0_27955779_32182.cpp:9:14: note: candidates are: int next [100050]
int first[N],next[N],to[N],tot;
^
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_27955779_32182.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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