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View Compilation Error

0_0_23024675_17231.cpp: In function 'int into(node)':
0_0_23024675_17231.cpp:19:13: error: reference to 'next' is ambiguous
             next.x=Q.x,next.y=Q.y;
             ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:19:24: error: reference to 'next' is ambiguous
             next.x=Q.x,next.y=Q.y;
                        ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:20:13: error: reference to 'next' is ambiguous
             next.s=Q.s+1;
             ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:19: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                   ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:30: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                              ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:41: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                                         ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:51: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                                                   ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:61: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                                                             ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:74: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                                                                          ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:21:82: error: reference to 'next' is ambiguous
             while(next.x>=0&&next.y>=0&&next.x<n&&next.y<m&&next.s<=k&&a[next.x][next.y]=='.')
                                                                                  ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.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_23024675_17231.cpp:23:17: error: reference to 'next' is ambiguous
                 next.x+=dir[i][0],next.y+=dir[i][1];
                 ^
0_0_23024675_17231.cpp:11:10: note: candidates are: node next
 node now,next;
          ^
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++/deque:60,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_23024675_17231.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note:                 tem


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