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View Compilation Error

0_0_23284536_1259.cpp: In function 'void bfs()':
0_0_23284536_1259.cpp:57:38: error: reference to 'hash' is ambiguous
    if(check(q.bx,q.by)&&check(s,e)&&!hash[q.bx][q.by][s][e]){
                                      ^
0_0_23284536_1259.cpp:12:5: note: candidates are: int hash [8][8][8][8]
 int hash[max_n][max_n][max_n][max_n];
     ^
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_23284536_1259.cpp:2:
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_23284536_1259.cpp:63:6: error: reference to 'hash' is ambiguous
      hash[q.bx][q.by][s][e] = 1;
      ^
0_0_23284536_1259.cpp:12:5: note: candidates are: int hash [8][8][8][8]
 int hash[max_n][max_n][max_n][max_n];
     ^
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_23284536_1259.cpp:2:
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_23284536_1259.cpp: In function 'int main()':
0_0_23284536_1259.cpp:79:10: error: reference to 'hash' is ambiguous
   memset(hash,0,sizeof(hash));
          ^
0_0_23284536_1259.cpp:12:5: note: candidates are: int hash [8][8][8][8]
 int hash[max_n][max_n][max_n][max_n];
     ^
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_23284536_1259.cpp:2:
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_23284536_1259.cpp:79:24: error: reference to 'hash' is ambiguous
   memset(hash,0,sizeof(hash));
                        ^
0_0_23284536_1259.cpp:12:5: note: candidates are: int hash [8][8][8][8]
 int hash[max_n][max_n][max_n][max_n];
     ^
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_23284536_1259.cpp:2:
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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