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View Compilation Error

0_0_39022202_21319.cpp: In function 'void dfs(int, int, int)':
0_0_39022202_21319.cpp:21:51: error: reference to 'visit' is ambiguous
   21 |          if(CHECK(xx,yy)  && mat[xx][yy]!='X' && !visit[xx][yy]){
      |                                                   ^~~~~
In file included from .\stdc++.h:80:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1867:5: note: candidates are: 'template<class _Res, class _Visitor, class ... _Variants> constexpr _Res std::visit(_Visitor&&, _Variants&& ...)'
 1867 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1827:5: note:                 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1827 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
0_0_39022202_21319.cpp:3:20: note:                 'int visit [8][8]'
    3 | char mat[8][8];int visit[8][8];
      |                    ^~~~~
0_0_39022202_21319.cpp:22:13: error: reference to 'visit' is ambiguous
   22 |             visit[xx][yy] = 1;          //地板标记为走过,不能再走
      |             ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1867:5: note: candidates are: 'template<class _Res, class _Visitor, class ... _Variants> constexpr _Res std::visit(_Visitor&&, _Variants&& ...)'
 1867 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1827:5: note:                 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1827 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
0_0_39022202_21319.cpp:3:20: note:                 'int visit [8][8]'
    3 | char mat[8][8];int visit[8][8];
      |                    ^~~~~
0_0_39022202_21319.cpp:24:13: error: reference to 'visit' is ambiguous
   24 |             visit[xx][yy] = 0;          //递归返回,这块地板恢复为没走过
      |             ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1867:5: note: candidates are: 'template<class _Res, class _Visitor, class ... _Variants> constexpr _Res std::visit(_Visitor&&, _Variants&& ...)'
 1867 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1827:5: note:                 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1827 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
0_0_39022202_21319.cpp:3:20: note:                 'int visit [8][8]'
    3 | char mat[8][8];int visit[8][8];
      |                    ^~~~~
0_0_39022202_21319.cpp: In function 'int main()':
0_0_39022202_21319.cpp:38:16: error: reference to 'visit' is ambiguous
   38 |         memset(visit, 0, sizeof(visit));
      |                ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1867:5: note: candidates are: 'template<class _Res, class _Visitor, class ... _Variants> constexpr _Res std::visit(_Visitor&&, _Variants&& ...)'
 1867 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1827:5: note:                 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1827 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
0_0_39022202_21319.cpp:3:20: note:                 'int visit [8][8]'
    3 | char mat[8][8];int visit[8][8];
      |                    ^~~~~
0_0_39022202_21319.cpp:38:33: error: reference to 'visit' is ambiguous
   38 |         memset(visit, 0, sizeof(visit));
      |                                 ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1867:5: note: candidates are: 'template<class _Res, class _Visitor, class ... _Variants> constexpr _Res std::visit(_Visitor&&, _Variants&& ...)'
 1867 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1827:5: note:                 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1827 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
0_0_39022202_21319.cpp:3:20: note:                 'int visit [8][8]'
    3 | char mat[8][8];int visit[8][8];
      |                    ^~~~~
0_0_39022202_21319.cpp:42:9: error: reference to 'visit' is ambiguous
   42 |         visit[a][b] = 1;                     //标记起点已经走过
      |         ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1867:5: note: candidates are: 'template<class _Res, class _Visitor, class ... _Variants> constexpr _Res std::visit(_Visitor&&, _Variants&& ...)'
 1867 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/variant:1827:5: note:                 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1827 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
0_0_39022202_21319.cpp:3:20: note:                 'int visit [8][8]'
    3 | char mat[8][8];int visit[8][8];
      |                    ^~~~~


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