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View Compilation Error

0_0_17978736_11735.cpp: In function 'int can(int)':
0_0_17978736_11735.cpp:49:6: error: reference to 'hash' is ambiguous
   if(hash[*it]==0){
      ^
0_0_17978736_11735.cpp:11:6: note: candidates are: bool hash [201]
 bool hash[maxn];
      ^
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 0_0_17978736_11735.cpp:3:
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_17978736_11735.cpp:50:4: error: reference to 'hash' is ambiguous
    hash[*it]=1;
    ^
0_0_17978736_11735.cpp:11:6: note: candidates are: bool hash [201]
 bool hash[maxn];
      ^
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 0_0_17978736_11735.cpp:3:
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_17978736_11735.cpp: In function 'void work()':
0_0_17978736_11735.cpp:67:16: error: reference to 'hash' is ambiguous
         memset(hash,0,sizeof(hash));
                ^
0_0_17978736_11735.cpp:11:6: note: candidates are: bool hash [201]
 bool hash[maxn];
      ^
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 0_0_17978736_11735.cpp:3:
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_17978736_11735.cpp:67:30: error: reference to 'hash' is ambiguous
         memset(hash,0,sizeof(hash));
                              ^
0_0_17978736_11735.cpp:11:6: note: candidates are: bool hash [201]
 bool hash[maxn];
      ^
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 0_0_17978736_11735.cpp:3:
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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