0_0_17023764_20016.cpp: In function 'void add_edge(int, int)':
0_0_17023764_20016.cpp:25:19: error: reference to 'next' is ambiguous
to[ecnt] = v; next[ecnt] = head[u]; head[u] = ecnt++;
^
0_0_17023764_20016.cpp:16:15: note: candidates are: int next [200010]
int to[MAXE], next[MAXE];
^
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_17023764_20016.cpp:7:
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_17023764_20016.cpp:26:19: error: reference to 'next' is ambiguous
to[ecnt] = u; next[ecnt] = head[v]; head[v] = ecnt++;
^
0_0_17023764_20016.cpp:16:15: note: candidates are: int next [200010]
int to[MAXE], next[MAXE];
^
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_17023764_20016.cpp:7:
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_17023764_20016.cpp: In function 'void dfs(int, int, int)':
0_0_17023764_20016.cpp:34:34: error: reference to 'next' is ambiguous
for(int p = head[u]; ~p; p = next[p]) {
^
0_0_17023764_20016.cpp:16:15: note: candidates are: int next [200010]
int to[MAXE], next[MAXE];
^
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_17023764_20016.cpp:7:
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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