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View Compilation Error

0_0_39456977_1454.cpp: In function 'void solve()':
0_0_39456977_1454.cpp:16:9: error: reference to 'hash' is ambiguous
   16 |         hash[0]=0;
      |         ^~~~
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/string_view:42,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/basic_string.h:47,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/string:54,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bitset:52,
                 from .\stdc++.h:52:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:19:17: error: reference to 'hash' is ambiguous
   19 |                 hash[i]=hash[i-1]*p+a[i];
      |                 ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:19:25: error: reference to 'hash' is ambiguous
   19 |                 hash[i]=hash[i-1]*p+a[i];
      |                         ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:23:27: error: reference to 'hash' is ambiguous
   23 |                 st.insert(hash[i+lena]-hash[i]*pw[lena]);
      |                           ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:23:40: error: reference to 'hash' is ambiguous
   23 |                 st.insert(hash[i+lena]-hash[i]*pw[lena]);
      |                                        ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:28:17: error: reference to 'hash' is ambiguous
   28 |                 hash[i]=hash[i-1]*p+b[i];
      |                 ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:28:25: error: reference to 'hash' is ambiguous
   28 |                 hash[i]=hash[i-1]*p+b[i];
      |                         ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:32:29: error: reference to 'hash' is ambiguous
   32 |                 if(st.count(hash[i+lena]-hash[i]*pw[lena])==1) ans++;
      |                             ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~
0_0_39456977_1454.cpp:32:42: error: reference to 'hash' is ambiguous
   32 |                 if(st.count(hash[i+lena]-hash[i]*pw[lena])==1) ans++;
      |                                          ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
0_0_39456977_1454.cpp:5:4: note:                 'long long int hash [2000005]'
    5 | ll hash[2000005];
      |    ^~~~


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