0_0_14154404_23030.cpp: In function 'void add_edge(int, int)':
0_0_14154404_23030.cpp:103:5: error: reference to 'next' is ambiguous
next[e]=pre[x];
^
0_0_14154404_23030.cpp:97:12: note: candidates are: int next [200010]
int pre[N],next[N];
^
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_14154404_23030.cpp:23:
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_14154404_23030.cpp: In function 'void get()':
0_0_14154404_23030.cpp:124:40: error: reference to 'next' is ambiguous
for(int j=pre[h]; j!=-1; j=next[j])
^
0_0_14154404_23030.cpp:97:12: note: candidates are: int next [200010]
int pre[N],next[N];
^
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_14154404_23030.cpp:23:
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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