0_0_18333888_14693.cpp: In function 'void add(int, int, int)':
0_0_18333888_14693.cpp:22:2: error: reference to 'next' is ambiguous
next[tot] = head[u];
^
0_0_18333888_14693.cpp:16:66: note: candidates are: int next [12000054]
int n, tot, cur[maxn], head[maxn], to[6 * maxn], flow[6 * maxn], next[6 * maxn];
^
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_18333888_14693.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_18333888_14693.cpp: In function 'bool bfs()':
0_0_18333888_14693.cpp:37:34: error: reference to 'next' is ambiguous
for (int i = head[now]; i; i = next[i])
^
0_0_18333888_14693.cpp:16:66: note: candidates are: int next [12000054]
int n, tot, cur[maxn], head[maxn], to[6 * maxn], flow[6 * maxn], next[6 * maxn];
^
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_18333888_14693.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_18333888_14693.cpp: In function 'int dfs(int, int)':
0_0_18333888_14693.cpp:53:31: error: reference to 'next' is ambiguous
for (int &i = cur[x]; i; i = next[i])
^
0_0_18333888_14693.cpp:16:66: note: candidates are: int next [12000054]
int n, tot, cur[maxn], head[maxn], to[6 * maxn], flow[6 * maxn], next[6 * maxn];
^
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_18333888_14693.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_18333888_14693.cpp: In function 'int main()':
0_0_18333888_14693.cpp:85:11: error: reference to 'next' is ambiguous
memset (next, 0, sizeof (next));
^
0_0_18333888_14693.cpp:16:66: note: candidates are: int next [12000054]
int n, tot, cur[maxn], head[maxn], to[6 * maxn], flow[6 * maxn], next[6 * maxn];
^
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_18333888_14693.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_18333888_14693.cpp:85:28: error: reference to 'next' is ambiguous
memset (next, 0, sizeof (next));
^
0_0_18333888_14693.cpp:16:66: note: candidates are: int next [12000054]
int n, tot, cur[maxn], head[maxn], to[6 * maxn], flow[6 * maxn], next[6 * maxn];
^
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_18333888_14693.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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