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View Compilation Error

0_0_15597004_12857.cpp: In function 'int bfs()':
0_0_15597004_12857.cpp:39:2: error: reference to 'hash' is ambiguous
  hash[sr][sc][0] = 1;
  ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:60:8: error: reference to 'hash' is ambiguous
     if(hash[tr][tc][key]) continue;
        ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:63:5: error: reference to 'hash' is ambiguous
     hash[tr][tc][key] = 1;
     ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:68:48: error: reference to 'hash' is ambiguous
     if(!(curkey & 1<<(map[tr][tc].type-65)) || hash[tr][tc][curkey]) continue;
                                                ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:71:5: error: reference to 'hash' is ambiguous
     hash[tr][tc][curkey] = 1;
     ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:76:8: error: reference to 'hash' is ambiguous
     if(hash[tr][tc][curkey]) continue;
        ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:79:5: error: reference to 'hash' is ambiguous
     hash[tr][tc][curkey] = 1;
     ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp: In function 'int main()':
0_0_15597004_12857.cpp:115:10: error: reference to 'hash' is ambiguous
   memset(hash,0,sizeof(hash));
          ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_15597004_12857.cpp:115:24: error: reference to 'hash' is ambiguous
   memset(hash,0,sizeof(hash));
                        ^
0_0_15597004_12857.cpp:27:5: note: candidates are: int hash [21][21][1025]
 int hash[MAXN][MAXN][1025];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:1181:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:61,
                 from 0_0_15597004_12857.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^


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