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View Compilation Error

0_0_21657102_17682.cpp: In function 'int bfs()':
0_0_21657102_17682.cpp:52:21: error: reference to 'end' is ambiguous
         return step[end.x][end.y];
                     ^
0_0_21657102_17682.cpp:20:11: note: candidates are: Map end
 Map start,end;
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:65:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:97:5: note:                 template<class _Tp, long long unsigned int _Nm> _Tp* std::end(_Tp (&)[_Nm])
     end(_Tp (&__arr)[_Nm])
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:78:5: note:                 template<class _Container> decltype (__cont.end()) std::end(const _Container&)
     end(const _Container& __cont) -> decltype(__cont.end())
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:68:5: note:                 template<class _Container> decltype (__cont.end()) std::end(_Container&)
     end(_Container& __cont) -> decltype(__cont.end())
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_deque.h:63:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:99:5: note:                 template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)
     end(initializer_list<_Tp> __ils) noexcept
     ^
0_0_21657102_17682.cpp:52:28: error: reference to 'end' is ambiguous
         return step[end.x][end.y];
                            ^
0_0_21657102_17682.cpp:20:11: note: candidates are: Map end
 Map start,end;
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:65:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:97:5: note:                 template<class _Tp, long long unsigned int _Nm> _Tp* std::end(_Tp (&)[_Nm])
     end(_Tp (&__arr)[_Nm])
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:78:5: note:                 template<class _Container> decltype (__cont.end()) std::end(const _Container&)
     end(const _Container& __cont) -> decltype(__cont.end())
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:68:5: note:                 template<class _Container> decltype (__cont.end()) std::end(_Container&)
     end(_Container& __cont) -> decltype(__cont.end())
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_deque.h:63:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:99:5: note:                 template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)
     end(initializer_list<_Tp> __ils) noexcept
     ^
0_0_21657102_17682.cpp: In function 'int main()':
0_0_21657102_17682.cpp:72:34: error: reference to 'end' is ambiguous
               if(map[i][j]=='a') end.x=i,end.y=j;
                                  ^
0_0_21657102_17682.cpp:20:11: note: candidates are: Map end
 Map start,end;
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:65:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:97:5: note:                 template<class _Tp, long long unsigned int _Nm> _Tp* std::end(_Tp (&)[_Nm])
     end(_Tp (&__arr)[_Nm])
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:78:5: note:                 template<class _Container> decltype (__cont.end()) std::end(const _Container&)
     end(const _Container& __cont) -> decltype(__cont.end())
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:68:5: note:                 template<class _Container> decltype (__cont.end()) std::end(_Container&)
     end(_Container& __cont) -> decltype(__cont.end())
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_deque.h:63:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:99:5: note:                 template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)
     end(initializer_list<_Tp> __ils) noexcept
     ^
0_0_21657102_17682.cpp:72:42: error: reference to 'end' is ambiguous
               if(map[i][j]=='a') end.x=i,end.y=j;
                                          ^
0_0_21657102_17682.cpp:20:11: note: candidates are: Map end
 Map start,end;
           ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:65:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:97:5: note:                 template<class _Tp, long long unsigned int _Nm> _Tp* std::end(_Tp (&)[_Nm])
     end(_Tp (&__arr)[_Nm])
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:78:5: note:                 template<class _Container> decltype (__cont.end()) std::end(const _Container&)
     end(const _Container& __cont) -> decltype(__cont.end())
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:68:5: note:                 template<class _Container> decltype (__cont.end()) std::end(_Container&)
     end(_Container& __cont) -> decltype(__cont.end())
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_deque.h:63:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/deque:64,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:60,
                 from 0_0_21657102_17682.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:99:5: note:                 template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)
     end(initializer_list<_Tp> __ils) noexcept
     ^


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