0_0_19609412_3217.cpp: In function 'void edge(int, int, int)':
0_0_19609412_3217.cpp:22:20: error: reference to 'next' is ambiguous
to[N]=V,c[N]=W,next[N]=first[U],first[U]=N;
^
0_0_19609412_3217.cpp:8:34: note: candidates are: int next [20010]
int first[maxn],to[maxn],c[maxn],next[maxn],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++/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_19609412_3217.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_19609412_3217.cpp: In function 'bool bfs()':
0_0_19609412_3217.cpp:45:41: error: reference to 'next' is ambiguous
for (int i=first[cur]; i!=-1; i=next[i])
^
0_0_19609412_3217.cpp:8:34: note: candidates are: int next [20010]
int first[maxn],to[maxn],c[maxn],next[maxn],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++/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_19609412_3217.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_19609412_3217.cpp: In function 'int dfs(int, int)':
0_0_19609412_3217.cpp:60:37: error: reference to 'next' is ambiguous
for (int i=first[cur]; i!=-1; i=next[i])
^
0_0_19609412_3217.cpp:8:34: note: candidates are: int next [20010]
int first[maxn],to[maxn],c[maxn],next[maxn],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++/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_19609412_3217.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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