0_0_13860296_28249.cpp: In function 'void add_line(int, int)':
0_0_13860296_28249.cpp:26:2: error: reference to 'next' is ambiguous
next[tt] = head[x];
^
0_0_13860296_28249.cpp:19:29: note: candidates are: int next [600020]
int head[MAXN], flag[MAXN], next[MAXN*2], p[MAXN*2], h[MAXN], deep_node[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_13860296_28249.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_13860296_28249.cpp: In function 'void deal()':
0_0_13860296_28249.cpp:78:11: error: reference to 'next' is ambiguous
h[x] = next[h[x]];
^
0_0_13860296_28249.cpp:19:29: note: candidates are: int next [600020]
int head[MAXN], flag[MAXN], next[MAXN*2], p[MAXN*2], h[MAXN], deep_node[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_13860296_28249.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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