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View Compilation Error

0_0_30059798_20030.cpp: In function 'void BFS()':
0_0_30059798_20030.cpp:46:10: error: reference to 'hash' is ambiguous
    CLEAR(hash,0);
          ^
0_0_30059798_20030.cpp:16:33: note: in definition of macro 'CLEAR'
 #define CLEAR( a , x ) memset ( a , x , sizeof a )
                                 ^
0_0_30059798_20030.cpp:29:5: note: candidates are: int hash [400000]
 int hash[maxn],num[9];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_30059798_20030.cpp:4:
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_30059798_20030.cpp:46:10: error: reference to 'hash' is ambiguous
    CLEAR(hash,0);
          ^
0_0_30059798_20030.cpp:16:48: note: in definition of macro 'CLEAR'
 #define CLEAR( a , x ) memset ( a , x , sizeof a )
                                                ^
0_0_30059798_20030.cpp:29:5: note: candidates are: int hash [400000]
 int hash[maxn],num[9];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_30059798_20030.cpp:4:
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_30059798_20030.cpp:72:20: error: reference to 'hash' is ambiguous
                if(!hash[ed.val])
                    ^
0_0_30059798_20030.cpp:29:5: note: candidates are: int hash [400000]
 int hash[maxn],num[9];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_30059798_20030.cpp:4:
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_30059798_20030.cpp:74:19: error: reference to 'hash' is ambiguous
                   hash[ed.val]=1;
                   ^
0_0_30059798_20030.cpp:29:5: note: candidates are: int hash [400000]
 int hash[maxn],num[9];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_30059798_20030.cpp:4:
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_30059798_20030.cpp: In function 'int main()':
0_0_30059798_20030.cpp:97:12: error: reference to 'hash' is ambiguous
         if(hash[Hash(num)]) cout<<path[Hash(num)]<<endl;
            ^
0_0_30059798_20030.cpp:29:5: note: candidates are: int hash [400000]
 int hash[maxn],num[9];
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_30059798_20030.cpp:4:
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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