0_0_17538533_11861.cpp: In function 'void add(int, int)':
0_0_17538533_11861.cpp:18:2: error: reference to 'next' is ambiguous
next[++tot] = head[a]; head[a] = tot; pnt[tot] = b;
^
0_0_17538533_11861.cpp:12:5: note: candidates are: int next [50010]
arr next, cy, head, pnt, vis;
^
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_17538533_11861.cpp:3:
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_17538533_11861.cpp:19:2: error: reference to 'next' is ambiguous
next[++tot] = head[b]; head[b] = tot; pnt[tot] = a;
^
0_0_17538533_11861.cpp:12:5: note: candidates are: int next [50010]
arr next, cy, head, pnt, vis;
^
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_17538533_11861.cpp:3:
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_17538533_11861.cpp: In function 'int dfs(int)':
0_0_17538533_11861.cpp:24:31: error: reference to 'next' is ambiguous
for (int i = head[x]; i; i = next[i])
^
0_0_17538533_11861.cpp:12:5: note: candidates are: int next [50010]
arr next, cy, head, pnt, vis;
^
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_17538533_11861.cpp:3:
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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