0_0_30637731_30187.cpp: In function 'void add(int, int, int)':
0_0_30637731_30187.cpp:23:24: error: reference to 'next' is ambiguous
ver[e]=v;flow[e]=c;next[e]=head[u];head[u]=e++;
^
0_0_30637731_30187.cpp:12:12: note: candidates are: int next [2500000]
int ver[M],next[M],flow[M]; //ver为边指向的节点，flow为边的容量，next为链表的下一条边
^
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_30637731_30187.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_30637731_30187.cpp:24:24: error: reference to 'next' is ambiguous
ver[e]=u;flow[e]=0;next[e]=head[v];head[v]=e++;
^
0_0_30637731_30187.cpp:12:12: note: candidates are: int next [2500000]
int ver[M],next[M],flow[M]; //ver为边指向的节点，flow为边的容量，next为链表的下一条边
^
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_30637731_30187.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_30637731_30187.cpp: In function 'int bfs(int, int)':
0_0_30637731_30187.cpp:36:38: error: reference to 'next' is ambiguous
for(int j=head[q[i]];j!=-1;j=next[j])
^
0_0_30637731_30187.cpp:12:12: note: candidates are: int next [2500000]
int ver[M],next[M],flow[M]; //ver为边指向的节点，flow为边的容量，next为链表的下一条边
^
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_30637731_30187.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_30637731_30187.cpp: In function 'int dfs(int, int, int)':
0_0_30637731_30187.cpp:53:34: error: reference to 'next' is ambiguous
for(int &i=work[cur];i!=-1;i=next[i]) //work是临时链表头，这里用i引用它，这样寻找过的边不再寻找
^
0_0_30637731_30187.cpp:12:12: note: candidates are: int next [2500000]
int ver[M],next[M],flow[M]; //ver为边指向的节点，flow为边的容量，next为链表的下一条边
^
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_30637731_30187.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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