0_0_34632150_12159.cpp: In function 'void add_edge(int, int, int, int)':
0_0_34632150_12159.cpp:34:2: error: reference to 'next' is ambiguous
next[en] = first[u];
^
0_0_34632150_12159.cpp:25:19: note: candidates are: int next [200005]
int en, first[N], next[M];
^
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++/vector:60,
from 0_0_34632150_12159.cpp:3:
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_34632150_12159.cpp: In function 'void dfs_cut(int, int)':
0_0_34632150_12159.cpp:43:36: error: reference to 'next' is ambiguous
for (int i = first[u]; i + 1; i = next[i]) {
^
0_0_34632150_12159.cpp:25:19: note: candidates are: int next [200005]
int en, first[N], next[M];
^
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++/vector:60,
from 0_0_34632150_12159.cpp:3:
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_34632150_12159.cpp: In function 'void dfs_bcc(int)':
0_0_34632150_12159.cpp:64:36: error: reference to 'next' is ambiguous
for (int i = first[u]; i + 1; i = next[i]) {
^
0_0_34632150_12159.cpp:25:19: note: candidates are: int next [200005]
int en, first[N], next[M];
^
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++/vector:60,
from 0_0_34632150_12159.cpp:3:
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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