0_0_33586418_16874.cpp: In function 'void _add(int, int, int, long long int)':
0_0_33586418_16874.cpp:31:2: error: reference to 'next' is ambiguous
next[tot]=head[a];
^
0_0_33586418_16874.cpp:23:5: note: candidates are: int next [1000100]
int next[N*2],to[N*2],head[N],cap[N*2],pre[N],last[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++/algorithm:61,
from 0_0_33586418_16874.cpp:12:
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_33586418_16874.cpp: In function 'void MCMF()':
0_0_33586418_16874.cpp:68:35: error: reference to 'next' is ambiguous
for (int i=head[u],v; i!=-1; i=next[i]){
^
0_0_33586418_16874.cpp:23:5: note: candidates are: int next [1000100]
int next[N*2],to[N*2],head[N],cap[N*2],pre[N],last[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++/algorithm:61,
from 0_0_33586418_16874.cpp:12:
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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