answer.code:44:30: error: use of deleted function ‘std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = __int128; _Tp = int; _Hash = std::hash<__int128>; _Pred = std::equal_to<__int128>; _Alloc = std::allocator<std::pair<const __int128, int> >]’
   44 | unordered_map<__int128, int> M;
      |                              ^
In file included from /usr/include/c++/11/unordered_map:47,
                 from /usr/include/c++/11/functional:61,
                 from /usr/include/c++/11/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/11/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:65,
                 from answer.code:1:
/usr/include/c++/11/bits/unordered_map.h:141:7: note: ‘std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = __int128; _Tp = int; _Hash = std::hash<__int128>; _Pred = std::equal_to<__int128>; _Alloc = std::allocator<std::pair<const __int128, int> >]’ is implicitly deleted because the default definition would be ill-formed:
  141 |       unordered_map() = default;
      |       ^~~~~~~~~~~~~
/usr/include/c++/11/bits/unordered_map.h:141:7: error: use of deleted function ‘std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::_Hashtable() [with _Key = __int128; _Value = std::pair<const __int128, int>; _Alloc = std::allocator<std::pair<const __int128, int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<__int128>; _Hash = std::hash<__int128>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>]’
In file included from /usr/include/c++/11/unordered_map:46,
                 from /usr/include/c++/11/functional:61,
                 from /usr/include/c++/11/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/11/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:65,
                 from answer.code:1:
/usr/include/c++/11/bits/hashtable.h:512:7: note: ‘std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::_Hashtable() [with _Key = __int128; _Value = std::pair<const __int128, int>; _Alloc = std::allocator<std::pair<const __int128, int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<__int128>; _Hash = std::hash<__int128>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>]’ is implicitly deleted because the default definition would be ill-formed:
  512 |       _Hashtable() = default;
      |       ^~~~~~~~~~
/usr/include/c++/11/bits/hashtable.h:512:7: error: use of deleted function ‘std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _Traits>::_Hashtable_base() [with _Key = __int128; _Value = std::pair<const __int128, int>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<__int128>; _Hash = std::hash<__int128>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _Traits = std::__detail::_Hashtable_traits<true, false, true>]’
In file included from /usr/include/c++/11/bits/hashtable.h:35,
                 from /usr/include/c++/11/unordered_map:46,
                 from /usr/include/c++/11/functional:61,
                 from /usr/include/c++/11/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/11/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:65,
                 from answer.code:1:
/usr/include/c++/11/bits/hashtable_policy.h:1602:7: note: ‘std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _Traits>::_Hashtable_base() [with _Key = __int128; _Value = std::pair<const __int128, int>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<__int128>; _Hash = std::hash<__int128>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _Traits = std::__detail::_Hashtable_traits<true, false, true>]’ is implicitly deleted because the default definition would be ill-formed:
 1602 |       _Hashtable_base() = default;
      |       ^~~~~~~~~~~~~~~
/usr/include/c++/11/bits/hashtable_policy.h:1602:7: error: use of deleted function ‘std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Hash, _RangeHash, _Unused, __cache_hash_code>::_Hash_code_base() [with _Key = __int128; _Value = std::pair<const __int128, int>; _ExtractKey = std::__detail::_Select1st; _Hash = std::hash<__int128>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; bool __cache_hash_code = true]’
/usr/include/c++/11/bits/hashtable_pol...