0_0_13895200_23843.cpp: In function 'void build(int, int, int)':
0_0_13895200_23843.cpp:26:2: error: reference to 'next' is ambiguous
next[++op]=head[a];head[a]=op;to[op]=b;f[op]=c;
^
0_0_13895200_23843.cpp:9:28: note: candidates are: int next [600020]
int head[maxn],head2[maxn],next[maxm*2],to[maxm*2],f[maxm*2],op=1;
^
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_13895200_23843.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_13895200_23843.cpp:27:2: error: reference to 'next' is ambiguous
next[++op]=head[b];head[b]=op;to[op]=a;f[op]=0;
^
0_0_13895200_23843.cpp:9:28: note: candidates are: int next [600020]
int head[maxn],head2[maxn],next[maxm*2],to[maxm*2],f[maxm*2],op=1;
^
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_13895200_23843.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_13895200_23843.cpp: In function 'bool bfs()':
0_0_13895200_23843.cpp:38:31: error: reference to 'next' is ambiguous
for(int pos=head[s];pos;pos=next[pos]) {
^
0_0_13895200_23843.cpp:9:28: note: candidates are: int next [600020]
int head[maxn],head2[maxn],next[maxm*2],to[maxm*2],f[maxm*2],op=1;
^
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_13895200_23843.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_13895200_23843.cpp: In function 'bool find(int, int)':
0_0_13895200_23843.cpp:66:31: error: reference to 'next' is ambiguous
for(int&pos=head2[s];pos;pos=next[pos])
^
0_0_13895200_23843.cpp:9:28: note: candidates are: int next [600020]
int head[maxn],head2[maxn],next[maxm*2],to[maxm*2],f[maxm*2],op=1;
^
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_13895200_23843.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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