0_0_17695183_6024.cpp: In function 'void addedge(int, int, int, int)':
0_0_17695183_6024.cpp:24:5: error: reference to 'next' is ambiguous
next[p] = pre[x];
^
0_0_17695183_6024.cpp:13:5: note: candidates are: int next [500005]
int next[500005];
^
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++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_17695183_6024.cpp:2:
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_17695183_6024.cpp: In function 'int costFlow()':
0_0_17695183_6024.cpp:53:43: error: reference to 'next' is ambiguous
for (int k = pre[now]; k; k = next[k])
^
0_0_17695183_6024.cpp:13:5: note: candidates are: int next [500005]
int next[500005];
^
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++/deque:60,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
from 0_0_17695183_6024.cpp:2:
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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