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View Compilation Error

0_0_38573555_6097.cpp: In function 'int main()':
0_0_38573555_6097.cpp:15:16: error: reference to 'hash' is ambiguous
         memset(hash,0,sizeof(hash)); sum=0;
                ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string_view:43,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:48,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:52,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/iostream:39,
                 from 0_0_38573555_6097.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
     struct hash;
            ^~~~
0_0_38573555_6097.cpp:4:22: note:                 'int hash [2000010]'
 int a,b,c,d,pin[101],hash[2000010],i,j,sum;
                      ^~~~
0_0_38573555_6097.cpp:15:30: error: reference to 'hash' is ambiguous
         memset(hash,0,sizeof(hash)); sum=0;
                              ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string_view:43,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:48,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:52,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/iostream:39,
                 from 0_0_38573555_6097.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
     struct hash;
            ^~~~
0_0_38573555_6097.cpp:4:22: note:                 'int hash [2000010]'
 int a,b,c,d,pin[101],hash[2000010],i,j,sum;
                      ^~~~
0_0_38573555_6097.cpp:18:17: error: reference to 'hash' is ambiguous
                 hash[a*pin[i]+b*pin[j]+1000000]++;
                 ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string_view:43,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:48,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:52,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/iostream:39,
                 from 0_0_38573555_6097.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
     struct hash;
            ^~~~
0_0_38573555_6097.cpp:4:22: note:                 'int hash [2000010]'
 int a,b,c,d,pin[101],hash[2000010],i,j,sum;
                      ^~~~
0_0_38573555_6097.cpp:21:22: error: reference to 'hash' is ambiguous
                 sum+=hash[1000000-(c*pin[i]+d*pin[j])];
                      ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string_view:43,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:48,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:52,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/iostream:39,
                 from 0_0_38573555_6097.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/functional_hash.h:58:12: note: candidates are: 'template<class _Tp> struct std::hash'
     struct hash;
            ^~~~
0_0_38573555_6097.cpp:4:22: note:                 'int hash [2000010]'
 int a,b,c,d,pin[101],hash[2000010],i,j,sum;
                      ^~~~


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