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View Compilation Error

0_0_19938632_27679.cpp: In function 'void init()':
0_0_19938632_27679.cpp:68:9: error: reference to 'hash' is ambiguous
  memset(hash,0,sizeof hash);
         ^
0_0_19938632_27679.cpp:63:27: note: candidates are: int hash [1000000]
 int cas=1,ts,k,tnum,opnum,hash[1000000];
                           ^
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_19938632_27679.cpp:54:
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_19938632_27679.cpp:68:23: error: reference to 'hash' is ambiguous
  memset(hash,0,sizeof hash);
                       ^
0_0_19938632_27679.cpp:63:27: note: candidates are: int hash [1000000]
 int cas=1,ts,k,tnum,opnum,hash[1000000];
                           ^
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_19938632_27679.cpp:54:
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_19938632_27679.cpp: In function 'int main()':
0_0_19938632_27679.cpp:79:5: error: redefinition of 'int main()'
 int main(){
     ^
0_0_19938632_27679.cpp:5:5: note: 'int main()' previously defined here
 int main(){
     ^
0_0_19938632_27679.cpp:87:5: error: reference to 'hash' is ambiguous
     hash[tnum]=i;
     ^
0_0_19938632_27679.cpp:63:27: note: candidates are: int hash [1000000]
 int cas=1,ts,k,tnum,opnum,hash[1000000];
                           ^
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_19938632_27679.cpp:54:
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_19938632_27679.cpp:110:35: error: reference to 'hash' is ambiguous
     while(h->next!=NULL&&(h->qid!=hash[qr]))h=h->next;
                                   ^
0_0_19938632_27679.cpp:63:27: note: candidates are: int hash [1000000]
 int cas=1,ts,k,tnum,opnum,hash[1000000];
                           ^
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_19938632_27679.cpp:54:
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_19938632_27679.cpp:112:31: error: reference to 'hash' is ambiguous
     if(h->next==NULL&&h->qid!=hash[qr]){
                               ^
0_0_19938632_27679.cpp:63:27: note: candidates are: int hash [1000000]
 int cas=1,ts,k,tnum,opnum,hash[1000000];
                           ^
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_19938632_27679.cpp:54:
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_19938632_27679.cpp:116:13: error: reference to 'hash' is ambiguous
      h->qid=hash[qr];
             ^
0_0_19938632_27679.cpp:63:27: note: candidates are: int hash [1000000]
 int cas=1,ts,k,tnum,opnum,hash[1000000];
                           ^
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_19938632_27679.cpp:54:
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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