| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 923012 | ttamx | Lampice (COCI19_lampice) | 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.
#include<bits/stdc++.h>
using namespace std;
using ull = unsigned long long;
using pu=pair<ull,int>;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N=5e5+5;
const ull BASE=rng();
int n;
string s;
ull a[N];
vector<int> adj[N];
ull hsh[26],pw[N];
int sz[N];
bool used[N];
int len;
unordered_map<pu,bool> mp;
void init(){
for(int i=1;i<=n;i++)used[i]=false;
}
int get_sz(int u,int p=0){
sz[u]=1;
for(auto v:adj[u])if(v!=p&&!used[v])sz[u]+=get_sz(v,u);
return sz[u];
}
int centroid(int u,int cnt,int p=0){
for(auto v:adj[u])if(v!=p&&!used[v]&&sz[v]>cnt/2)return centroid(v,cnt,u);
return u;
}
bool dfs1(int u,int p,ull cur,ull rev,int sz){
if(sz>len)return false;
if(mp[pu(rev*pw[len-sz]-cur,len-sz)])return true;
for(auto v:adj[u])if(v!=p&&!used[v]){
if(dfs1(v,u,cur*BASE+a[v],rev+a[v]*pw[sz],sz+1)){
return true;
}
}
return false;
}
void dfs2(int u,int p,ull cur,ull rev,int sz){
if(sz>len)return;
mp[pu(rev*pw[len-sz]-cur,sz)]=true;
for(auto v:adj[u])if(v!=p&&!used[v]){
dfs2(v,u,cur*BASE+a[v],rev+a[v]*pw[sz],sz+1);
}
}
bool dfs3(int u,int p,ull cur,ull rev,int sz){
if(sz>len)return false;
if(sz==len&&cur==rev)return true;
for(auto v:adj[u])if(v!=p&&!used[v]){
if(dfs3(v,u,cur*BASE+a[v],rev+a[v]*pw[sz],sz+1)){
return true;
}
}
return false;
}
bool decom(int u){
u=centroid(u,get_sz(u));
used[u]=true;
if(dfs3(u,u,a[u],a[u],1))return true;
for(auto v:adj[u])if(!used[v]){
if(dfs1(v,u,a[v],a[v],1))return true;
dfs2(v,u,a[u]*BASE+a[v],a[v]*BASE+a[u],2);
}
mp.clear();
for(auto v:adj[u])if(!used[v]&&decom(v))return true;
return false;
}
int solve1(){
int l=0,r=(n-1)/2;
while(l<r){
int m=(l+r+1)/2;
len=m*2+1;
init();
if(decom(1))l=m;
else r=m-1;
}
return l*2+1;
}
int solve2(){
int l=0,r=n/2;
while(l<r){
int m=(l+r+1)/2;
len=m*2;
init();
if(decom(1))l=m;
else r=m-1;
}
return l*2;
}
int main(){
cin.tie(nullptr)->sync_with_stdio(false);
for(int i=0;i<26;i++)hsh[i]=rng();
cin >> n >> s;
pw[0]=1;
for(int i=1;i<=n;i++)pw[i]=pw[i-1]*BASE;
for(int i=1;i<=n;i++)a[i]=hsh[s[i-1]-'a'];
for(int i=1;i<n;i++){
int u,v;
cin >> u >> v;
adj[u].emplace_back(v);
adj[v].emplace_back(u);
}
cout << max(solve1(),solve2());
}
Compilation message (stderr)
lampice.cpp:22:24: error: use of deleted function 'std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = std::pair<long long unsigned int, int>; _Tp = bool; _Hash = std::hash<std::pair<long long unsigned int, int> >; _Pred = std::equal_to<std::pair<long long unsigned int, int> >; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >]'
22 | unordered_map<pu,bool> mp;
| ^~
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 lampice.cpp:2:
/usr/include/c++/10/bits/unordered_map.h:141:7: note: 'std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = std::pair<long long unsigned int, int>; _Tp = bool; _Hash = std::hash<std::pair<long long unsigned int, int> >; _Pred = std::equal_to<std::pair<long long unsigned int, int> >; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >]' 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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::pair<long long unsigned int, int> >; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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 lampice.cpp:2:
/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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::pair<long long unsigned int, int> >; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::pair<long long unsigned int, int> >; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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 lampice.cpp:2:
/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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::pair<long long unsigned int, int> >; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _ExtractKey = std::__detail::_Select1st; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _ExtractKey = std::__detail::_Select1st; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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<std::pair<long long unsigned int, int> >]'
/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<std::pair<long long unsigned int, int> >]' 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<std::pair<long long unsigned int, int> >::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 lampice.cpp:2:
/usr/include/c++/10/bits/functional_hash.h:101:12: note: 'std::hash<std::pair<long long unsigned int, int> >::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<std::pair<long long unsigned int, int>, 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 = std::pair<long long unsigned int, int>; 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 = std::pair<long long unsigned int, int>; 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 lampice.cpp:2:
/usr/include/c++/10/bits/hashtable_policy.h:1112:7: error: use of deleted function 'std::hash<std::pair<long long unsigned int, int> >::~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 lampice.cpp:2:
/usr/include/c++/10/bits/functional_hash.h:101:12: note: 'std::hash<std::pair<long long unsigned int, int> >::~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 = std::pair<long long unsigned int, int>; 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 lampice.cpp:2:
/usr/include/c++/10/bits/hashtable_policy.h:1368:7: error: use of deleted function 'std::__detail::_Hashtable_ebo_helper<1, std::hash<std::pair<long long unsigned int, int> >, 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<std::pair<long long unsigned int, int> >, 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<std::pair<long long unsigned int, int> >::~hash()'
/usr/include/c++/10/bits/hashtable_policy.h:1791:5: error: use of deleted function 'std::__detail::_Hash_code_base<std::pair<long long unsigned int, int>, std::pair<const std::pair<long long unsigned int, int>, bool>, std::__detail::_Select1st, std::hash<std::pair<long long unsigned int, int> >, 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<std::pair<long long unsigned int, int>, std::pair<const std::pair<long long unsigned int, int>, bool>, std::__detail::_Select1st, std::hash<std::pair<long long unsigned int, int> >, 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<std::pair<long long unsigned int, int> >, 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 lampice.cpp:2:
/usr/include/c++/10/bits/hashtable.h:451:7: error: use of deleted function 'std::__detail::_Hashtable_base<std::pair<long long unsigned int, int>, std::pair<const std::pair<long long unsigned int, int>, bool>, std::__detail::_Select1st, std::equal_to<std::pair<long long unsigned int, int> >, std::hash<std::pair<long long unsigned int, int> >, 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 lampice.cpp:2:
/usr/include/c++/10/bits/hashtable_policy.h:1725:10: note: 'std::__detail::_Hashtable_base<std::pair<long long unsigned int, int>, std::pair<const std::pair<long long unsigned int, int>, bool>, std::__detail::_Select1st, std::equal_to<std::pair<long long unsigned int, int> >, std::hash<std::pair<long long unsigned int, int> >, 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<std::pair<long long unsigned int, int>, std::pair<const std::pair<long long unsigned int, int>, bool>, std::__detail::_Select1st, std::hash<std::pair<long long unsigned int, int> >, 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 = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _ExtractKey = std::__detail::_Select1st; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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_policy.h:734:45: required from 'std::__detail::_Map_base<_Key, _Pair, _Alloc, std::__detail::_Select1st, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits, true>::mapped_type& std::__detail::_Map_base<_Key, _Pair, _Alloc, std::__detail::_Select1st, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits, true>::operator[](std::__detail::_Map_base<_Key, _Pair, _Alloc, std::__detail::_Select1st, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits, true>::key_type&&) [with _Key = std::pair<long long unsigned int, int>; _Pair = std::pair<const std::pair<long long unsigned int, int>, bool>; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >; _Equal = std::equal_to<std::pair<long long unsigned int, int> >; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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::__detail::_Map_base<_Key, _Pair, _Alloc, std::__detail::_Select1st, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits, true>::mapped_type = bool; std::__detail::_Map_base<_Key, _Pair, _Alloc, std::__detail::_Select1st, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits, true>::key_type = std::pair<long long unsigned int, int>]'
/usr/include/c++/10/bits/unordered_map.h:988:20: required from 'std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::mapped_type& std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::key_type&&) [with _Key = std::pair<long long unsigned int, int>; _Tp = bool; _Hash = std::hash<std::pair<long long unsigned int, int> >; _Pred = std::equal_to<std::pair<long long unsigned int, int> >; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >; std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::mapped_type = bool; std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::key_type = std::pair<long long unsigned int, int>]'
lampice.cpp:41:40: 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<std::pair<long long unsigned int, int> >) (const std::pair<long long unsigned int, int>&)'
1379 | return _M_h1()(__k);
| ~~~~~~~^~~~~
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 lampice.cpp:2:
/usr/include/c++/10/bits/hashtable.h: In instantiation of 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, _Traits>::~_Hashtable() [with _Key = std::pair<long long unsigned int, int>; _Value = std::pair<const std::pair<long long unsigned int, int>, bool>; _Alloc = std::allocator<std::pair<const std::pair<long long unsigned int, int>, bool> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::pair<long long unsigned int, int> >; _H1 = std::hash<std::pair<long long unsigned int, int> >; _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>]':
/usr/include/c++/10/bits/unordered_map.h:102:11: required from here
/usr/include/c++/10/bits/hashtable.h:1389:5: error: use of deleted function 'std::__detail::_Hashtable_base<std::pair<long long unsigned int, int>, std::pair<const std::pair<long long unsigned int, int>, bool>, std::__detail::_Select1st, std::equal_to<std::pair<long long unsigned int, int> >, std::hash<std::pair<long long unsigned int, int> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::~_Hashtable_base()'
1389 | }
| ^