0_0_16462493_16942.cpp: In function 'void Add(int, int)':
0_0_16462493_16942.cpp:20:5: error: reference to 'next' is ambiguous
next[++total] = head[x];
^
0_0_16462493_16942.cpp:16:5: note: candidates are: int next [400020]
int next[MAX << 1],aim[MAX << 1];
^
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/stl_tree.h:61,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/map:60,
from 0_0_16462493_16942.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_16462493_16942.cpp: In function 'void BFS(int)':
0_0_16462493_16942.cpp:39:37: error: reference to 'next' is ambiguous
for(int i = head[x]; i; i = next[i]) {
^
0_0_16462493_16942.cpp:16:5: note: candidates are: int next [400020]
int next[MAX << 1],aim[MAX << 1];
^
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/stl_tree.h:61,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/map:60,
from 0_0_16462493_16942.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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