| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 624091 | jophyyjh | Packing Biscuits (IOI20_biscuits) | C++14 | Compilation error | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/**
* Binary. Hmm, interesting. I started with [S2], which I solved with recursion in
* O(kq). The basic idea is to treat two 2^i biscuits in the bag as one 2^(i+1).
*
* A few greedy observations:
* (1) Given x, can we determine if it's possible? Well, we can simply iterate i
* from large to small. If the additional tastiness x we still need for a
* certain bag satisfies x >= 2^i, put a biscuit 2^i in the bag if there's one.
* (2) Biscuits of the same type can be distributed as evenly as possible, i.e.
* there is an optimal partition s.t. for every i
* |#2^i_biscuits_in_bag_1 - #2^i_biscuits_in_big_2| <= 1.
* (3) Unlike (1), (2), we consider from small to large. If x is odd, each bag needs
* at least 1 2^0 biscuit. After that, every 2 2^O biscuits can be grouped to
* form 1 2^1 biscuit, so we can add this num to the original num of 2^1
* biscuits. Well, let's write this recursively:
* def find():
* total = 0
* if #2^0 >= x:
* add floor((#2^0 - x) / 2) to #2^1 and recurse downdwards
* add floor(#2^0 / 2) to 2^1 and recurse downwards
* ...
*
* Can we AC this problem with (3)? I guess that the num of configurations given to
* find() isn't too many, so we can optimize it with memoization. Indeed, we can
* prove that in each level of find(), the num. of unique calls the next level of
* find() is bounded by x. This is because x >= x/2 + x/4 + x/8 + x/16 + .... [S1-3]
* are solved.
*
* In impl1, the function search(p, first) doesn't decrease as first increases.
* Furthermore, if search(p, w) and search(p, z) are both called, |w-z| <= x.
*
* Time Complexity: O(xqk * log(xk)) (partial solution)
* Implementation 1 (Only solves [S1-3], may solve [S4])
*/
#include <bits/stdc++.h>
#include "biscuits.h"
typedef long long ll;
ll x;
std::vector<ll> a;
struct pair_t {
int p;
ll first;
};
inline bool operator<(const pair_t& p1, const pair_t& p2) {
return p1.p < p2.p || (p1.p == p2.p && p1.first < p2.first);
}
std::unordered_map<pair_t, ll> cache;
ll search(int p, ll first) {
if (cache.find(pair_t{p, first}) == cache.end()) {
int k = a.size();
if (p == k - 1)
return first / x + 1;
ll total = search(p + 1, a[p + 1] + first / 2);
if (first >= x)
total += search(p + 1, a[p + 1] + (first - x) / 2);
cache[pair_t{p, first}] = total;
}
return cache[pair_t{p, first}];
}
ll count_tastiness(ll _x, std::vector<ll> _a) {
cache.clear();
x = _x, a = _a;
std::cerr << "[debug] x is: " << x << std::endl;
for (int i = 0; i < 30; i++)
std::cerr << "[debug] a_0 = " << i << ": " << search(0, i) << std::endl;
return -1;
}
Compilation message (stderr)
biscuits.cpp:54:32: error: use of deleted function 'std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = pair_t; _Tp = long long int; _Hash = std::hash<pair_t>; _Pred = std::equal_to<pair_t>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >]'
54 | std::unordered_map<pair_t, ll> cache;
| ^~~~~
In file included from /usr/include/c++/10/unordered_map:47,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/unordered_map.h:141:7: note: 'std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = pair_t; _Tp = long long int; _Hash = std::hash<pair_t>; _Pred = std::equal_to<pair_t>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >]' is implicitly deleted because the default definition would be ill-formed:
141 | unordered_map() = default;
| ^~~~~~~~~~~~~
/usr/include/c++/10/bits/unordered_map.h:141:7: error: use of deleted function 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_Hashtable() [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = 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++/10/unordered_map:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/hashtable.h:451:7: note: 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_Hashtable() [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = 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:
451 | _Hashtable() = default;
| ^~~~~~~~~~
/usr/include/c++/10/bits/hashtable.h:451:7: error: use of deleted function 'std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::_Hashtable_base() [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = std::__detail::_Default_ranged_hash; _Traits = std::__detail::_Hashtable_traits<true, false, true>]'
In file included from /usr/include/c++/10/bits/hashtable.h:35,
from /usr/include/c++/10/unordered_map:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/hashtable_policy.h:1791:5: note: 'std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::_Hashtable_base() [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = std::__detail::_Default_ranged_hash; _Traits = std::__detail::_Hashtable_traits<true, false, true>]' is implicitly deleted because the default definition would be ill-formed:
1791 | _Hashtable_base() = default;
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1791:5: error: use of deleted function 'std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, std::__detail::_Default_ranged_hash, true>::_Hash_code_base() [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _ExtractKey = std::__detail::_Select1st; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing]'
/usr/include/c++/10/bits/hashtable_policy.h:1368:7: note: 'std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, std::__detail::_Default_ranged_hash, true>::_Hash_code_base() [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _ExtractKey = std::__detail::_Select1st; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing]' is implicitly deleted because the default definition would be ill-formed:
1368 | _Hash_code_base() = default;
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1368:7: error: use of deleted function 'std::__detail::_Hashtable_ebo_helper<_Nm, _Tp, true>::_Hashtable_ebo_helper() [with int _Nm = 1; _Tp = std::hash<pair_t>]'
/usr/include/c++/10/bits/hashtable_policy.h:1112:7: note: 'std::__detail::_Hashtable_ebo_helper<_Nm, _Tp, true>::_Hashtable_ebo_helper() [with int _Nm = 1; _Tp = std::hash<pair_t>]' is implicitly deleted because the default definition would be ill-formed:
1112 | _Hashtable_ebo_helper() = default;
| ^~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1112:7: error: use of deleted function 'std::hash<pair_t>::hash()'
In file included from /usr/include/c++/10/bits/basic_string.h:6787,
from /usr/include/c++/10/string:55,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from biscuits.cpp:36:
/usr/include/c++/10/bits/functional_hash.h:101:12: note: 'std::hash<pair_t>::hash()' is implicitly deleted because the default definition would be ill-formed:
101 | struct hash : __hash_enum<_Tp>
| ^~~~
/usr/include/c++/10/bits/functional_hash.h:101:12: error: no matching function for call to 'std::__hash_enum<pair_t, false>::__hash_enum()'
/usr/include/c++/10/bits/functional_hash.h:82:7: note: candidate: 'std::__hash_enum<_Tp, <anonymous> >::__hash_enum(std::__hash_enum<_Tp, <anonymous> >&&) [with _Tp = pair_t; bool <anonymous> = false]'
82 | __hash_enum(__hash_enum&&);
| ^~~~~~~~~~~
/usr/include/c++/10/bits/functional_hash.h:82:7: note: candidate expects 1 argument, 0 provided
/usr/include/c++/10/bits/functional_hash.h:101:12: error: 'std::__hash_enum<_Tp, <anonymous> >::~__hash_enum() [with _Tp = pair_t; bool <anonymous> = false]' is private within this context
101 | struct hash : __hash_enum<_Tp>
| ^~~~
/usr/include/c++/10/bits/functional_hash.h:83:7: note: declared private here
83 | ~__hash_enum();
| ^
In file included from /usr/include/c++/10/bits/hashtable.h:35,
from /usr/include/c++/10/unordered_map:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/hashtable_policy.h:1112:7: error: use of deleted function 'std::hash<pair_t>::~hash()'
1112 | _Hashtable_ebo_helper() = default;
| ^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/bits/basic_string.h:6787,
from /usr/include/c++/10/string:55,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from biscuits.cpp:36:
/usr/include/c++/10/bits/functional_hash.h:101:12: note: 'std::hash<pair_t>::~hash()' is implicitly deleted because the default definition would be ill-formed:
101 | struct hash : __hash_enum<_Tp>
| ^~~~
/usr/include/c++/10/bits/functional_hash.h:101:12: error: 'std::__hash_enum<_Tp, <anonymous> >::~__hash_enum() [with _Tp = pair_t; bool <anonymous> = false]' is private within this context
/usr/include/c++/10/bits/functional_hash.h:83:7: note: declared private here
83 | ~__hash_enum();
| ^
In file included from /usr/include/c++/10/bits/hashtable.h:35,
from /usr/include/c++/10/unordered_map:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/hashtable_policy.h:1368:7: error: use of deleted function 'std::__detail::_Hashtable_ebo_helper<1, std::hash<pair_t>, true>::~_Hashtable_ebo_helper()'
1368 | _Hash_code_base() = default;
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1109:12: note: 'std::__detail::_Hashtable_ebo_helper<1, std::hash<pair_t>, true>::~_Hashtable_ebo_helper()' is implicitly deleted because the default definition would be ill-formed:
1109 | struct _Hashtable_ebo_helper<_Nm, _Tp, true>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1109:12: error: use of deleted function 'std::hash<pair_t>::~hash()'
/usr/include/c++/10/bits/hashtable_policy.h:1791:5: error: use of deleted function 'std::__detail::_Hash_code_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>::~_Hash_code_base()'
1791 | _Hashtable_base() = default;
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1341:12: note: 'std::__detail::_Hash_code_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>::~_Hash_code_base()' is implicitly deleted because the default definition would be ill-formed:
1341 | struct _Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1342 | _Default_ranged_hash, true>
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1341:12: error: use of deleted function 'std::__detail::_Hashtable_ebo_helper<1, std::hash<pair_t>, true>::~_Hashtable_ebo_helper()'
In file included from /usr/include/c++/10/unordered_map:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/hashtable.h:451:7: error: use of deleted function 'std::__detail::_Hashtable_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::equal_to<pair_t>, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::~_Hashtable_base()'
451 | _Hashtable() = default;
| ^~~~~~~~~~
In file included from /usr/include/c++/10/bits/hashtable.h:35,
from /usr/include/c++/10/unordered_map:46,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:117,
from biscuits.cpp:36:
/usr/include/c++/10/bits/hashtable_policy.h:1725:10: note: 'std::__detail::_Hashtable_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::equal_to<pair_t>, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::~_Hashtable_base()' is implicitly deleted because the default definition would be ill-formed:
1725 | struct _Hashtable_base
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1725:10: error: use of deleted function 'std::__detail::_Hash_code_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>::~_Hash_code_base()'
/usr/include/c++/10/bits/hashtable_policy.h: In instantiation of 'std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, std::__detail::_Default_ranged_hash, true>::__hash_code std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, std::__detail::_Default_ranged_hash, true>::_M_hash_code(const _Key&) const [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _ExtractKey = std::__detail::_Select1st; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, std::__detail::_Default_ranged_hash, true>::__hash_code = long unsigned int]':
/usr/include/c++/10/bits/hashtable.h:1452:46: required from 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::find(const key_type&) [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::iterator = std::__detail::_Hashtable_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::equal_to<pair_t>, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::iterator; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::key_type = pair_t]'
/usr/include/c++/10/bits/unordered_map.h:920:25: required from 'std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::find(const key_type&) [with _Key = pair_t; _Tp = long long int; _Hash = std::hash<pair_t>; _Pred = std::equal_to<pair_t>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >; std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator = std::__detail::_Hashtable_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::equal_to<pair_t>, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::iterator; std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::key_type = pair_t]'
biscuits.cpp:57:36: required from here
/usr/include/c++/10/bits/hashtable_policy.h:1377:16: error: static assertion failed: hash function must be invocable with an argument of key type
1377 | static_assert(__is_invocable<const _H1&, const _Key&>{},
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10/bits/hashtable_policy.h:1379:16: error: no match for call to '(const std::hash<pair_t>) (const pair_t&)'
1379 | return _M_h1()(__k);
| ~~~~~~~^~~~~
In file included from /usr/include/c++/10/string:48,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from biscuits.cpp:36:
/usr/include/c++/10/bits/stl_function.h: In instantiation of 'constexpr bool std::equal_to<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = pair_t]':
/usr/include/c++/10/bits/hashtable_policy.h:1804:12: required from 'bool std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::_M_equals(const _Key&, std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::__hash_code, std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::__node_type*) const [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = std::__detail::_Default_ranged_hash; _Traits = std::__detail::_Hashtable_traits<true, false, true>; std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::__hash_code = long unsigned int; std::__detail::_Hashtable_base<_Key, _Value, _ExtractKey, _Equal, _H1, _H2, _Hash, _Traits>::__node_type = std::__detail::_Hashtable_base<pair_t, std::pair<const pair_t, long long int>, std::__detail::_Select1st, std::equal_to<pair_t>, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::__node_type]'
/usr/include/c++/10/bits/hashtable.h:1580:23: required from 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__node_base* std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::_M_find_before_node(std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type, const key_type&, std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__hash_code) const [with _Key = pair_t; _Value = std::pair<const pair_t, long long int>; _Alloc = std::allocator<std::pair<const pair_t, long long int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<pair_t>; _H1 = std::hash<pair_t>; _H2 = std::__detail::_Mod_range_hashing; _Hash = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__node_base = std::_Hashtable<pair_t, std::pair<const pair_t, long long int>, std::allocator<std::pair<const pair_t, long long int> >, std::__detail::_Select1st, std::equal_to<pair_t>, std::hash<pair_t>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >::__node_base; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::size_type = long unsigned int; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::key_type = pair_t; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::__hash_code = long unsigned int]'
/usr/include/c++/10/bits/hashtable.h:693:28: required from 'st