0_0_15759286_31807.cpp: In function 'void addEdge(int, int)':
0_0_15759286_31807.cpp:46:5: error: reference to 'next' is ambiguous
next[top] = head[u];
^
0_0_15759286_31807.cpp:29:13: note: candidates are: int next [500010]
int to[NS], next[NS], top;
^
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++/algorithm:61,
from 0_0_15759286_31807.cpp:4:
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_15759286_31807.cpp: In function 'void dfs(int, int, int)':
0_0_15759286_31807.cpp:65:40: error: reference to 'next' is ambiguous
for(int i = head[rt]; i != -1; i = next[i])
^
0_0_15759286_31807.cpp:29:13: note: candidates are: int next [500010]
int to[NS], next[NS], top;
^
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++/algorithm:61,
from 0_0_15759286_31807.cpp:4:
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_15759286_31807.cpp:82:40: error: reference to 'next' is ambiguous
for(int i = head[rt]; i != -1; i = next[i])
^
0_0_15759286_31807.cpp:29:13: note: candidates are: int next [500010]
int to[NS], next[NS], top;
^
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++/algorithm:61,
from 0_0_15759286_31807.cpp:4:
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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