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View Compilation Error

0_0_18022947_17230.cpp: In function 'int main()':
0_0_18022947_17230.cpp:67:19: error: reference to 'hash' is ambiguous
             j=i%m;hash[i]=b[i]=a[j];
                   ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:70:14: error: reference to 'hash' is ambiguous
         sort(hash,hash+n);
              ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:70:19: error: reference to 'hash' is ambiguous
         sort(hash,hash+n);
                   ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:71:31: error: reference to 'hash' is ambiguous
         for(i=m=1;i<n;i++) if(hash[i]!=hash[i-1]) hash[m++]=hash[i];
                               ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:71:40: error: reference to 'hash' is ambiguous
         for(i=m=1;i<n;i++) if(hash[i]!=hash[i-1]) hash[m++]=hash[i];
                                        ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:71:51: error: reference to 'hash' is ambiguous
         for(i=m=1;i<n;i++) if(hash[i]!=hash[i-1]) hash[m++]=hash[i];
                                                   ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:71:61: error: reference to 'hash' is ambiguous
         for(i=m=1;i<n;i++) if(hash[i]!=hash[i-1]) hash[m++]=hash[i];
                                                             ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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_18022947_17230.cpp:74:27: error: reference to 'hash' is ambiguous
             pos=bs(b[i],m,hash)+1;
                           ^
0_0_18022947_17230.cpp:30:21: note: candidates are: long long int hash [500010]
 ll a[N],b[N],sum[N],hash[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_18022947_17230.cpp:8:
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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