제출 #1257094

#제출 시각아이디문제언어결과실행 시간메모리
1257094antonn사이버랜드 (APIO23_cyberland)C++20
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #define all(a) a.begin(), a.end() using namespace std; typedef long long ll; struct kek { double dist; int node; int cnt; }; double solve(int n, int m, int k, int h, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) { vector<vector<pair<int, int>>> g(n); for (int i = 0; i < m; i++) { g[x[i]].push_back({y[i], c[i]}); g[y[i]].push_back({x[i], c[i]}); } priority_queue<kek> pq; vector<vector<double>> dist(n, vector<double>(k + 1, 1e18)); for (int i = 0; i < n; i++) { if (i == 0 || arr[i] == 0) { dist[i][0] = 0; pq.push({0, i, 0}); } } while (!pq.empty()) { int u = pq.top().node; int kk = pq.top().cnt; pq.pop(); for (auto [v, c] : g[u]) { if (dist[u][kk] + c < dist[v][kk]) { dist[v][kk] = dist[u][kk] + c; pq.push({dist[v][kk], v, kk}); } if (v != h && arr[v] == 1 && kk + 1 < k && (dist[u][kk] + c) / 2 < dist[v][kk + 1]) { dist[v][kk + 1] = (dist[u][kk] + c) / 2; pq.push({dist[v][kk + 1], v, kk + 1}); } } } double res = 1e18; for (int i = 0; i < k; i++) res = min(res, dist[h][i]); return res; }

컴파일 시 표준 에러 (stderr) 메시지

In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h: In instantiation of 'constexpr bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = kek]':
/usr/include/c++/11/bits/predefined_ops.h:196:23:   required from 'constexpr bool __gnu_cxx::__ops::_Iter_comp_val<_Compare>::operator()(_Iterator, _Value&) [with _Iterator = __gnu_cxx::__normal_iterator<kek*, std::vector<kek, std::allocator<kek> > >; _Value = kek; _Compare = std::less<kek>]'
/usr/include/c++/11/bits/stl_heap.h:139:48:   required from 'constexpr void std::__push_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare&) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<kek*, std::vector<kek, std::allocator<kek> > >; _Distance = long int; _Tp = kek; _Compare = __gnu_cxx::__ops::_Iter_comp_val<std::less<kek> >]'
/usr/include/c++/11/bits/stl_heap.h:215:23:   required from 'constexpr void std::push_heap(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<kek*, std::vector<kek, std::allocator<kek> > >; _Compare = std::less<kek>]'
/usr/include/c++/11/bits/stl_queue.h:651:16:   required from 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(std::priority_queue<_Tp, _Sequence, _Compare>::value_type&&) [with _Tp = kek; _Sequence = std::vector<kek, std::allocator<kek> >; _Compare = std::less<kek>; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = kek]'
cyberland.cpp:24:20:   required from here
/usr/include/c++/11/bits/stl_function.h:400:20: error: no match for 'operator<' (operand types are 'const kek' and 'const kek')
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:538:5: note: candidate: 'template<class _IteratorL, class _IteratorR>  requires  three_way_comparable_with<_IteratorR, _IteratorL, std::partial_ordering> constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorR>&)' (reversed)
  538 |     operator<=>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:538:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::reverse_iterator<_IteratorL>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:1596:5: note: candidate: 'template<class _IteratorL, class _IteratorR>  requires  three_way_comparable_with<_IteratorR, _IteratorL, std::partial_ordering> constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)' (reversed)
 1596 |     operator<=>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1596:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::move_iterator<_IteratorL>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/basic_string.h:48,
                 from /usr/include/c++/11/string:55,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/string_view:556:5: note: candidate: 'template<class _CharT, class _Traits> constexpr decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(std::basic_string_view<_CharT, _Traits>, std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >)' (reversed)
  556 |     operator<=>(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/11/string_view:556:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'kek' is not derived from 'std::basic_string_view<_CharT, _Traits>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/string:55,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/basic_string.h:6276:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)' (reversed)
 6276 |     operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/11/bits/basic_string.h:6276:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/functional:54,
                 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 cyberland.cpp:1:
/usr/include/c++/11/tuple:1557:5: note: candidate: 'template<class ... _Tps, class ... _Ups> constexpr std::common_comparison_category_t<decltype (std::__detail::__synth3way(declval<_Tps&>(), declval<_Ups&>()))...> std::operator<=>(const std::tuple<_Tps ...>&, const std::tuple<_UTypes ...>&)' (reversed)
 1557 |     operator<=>(const tuple<_Tps...>& __t, const tuple<_Ups...>& __u)
      |     ^~~~~~~~
/usr/include/c++/11/tuple:1557:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::tuple<_Tps ...>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/locale_conv.h:41,
                 from /usr/include/c++/11/locale:43,
                 from /usr/include/c++/11/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/unique_ptr.h:895:5: note: candidate: 'template<class _Tp, class _Dp, class _Up, class _Ep>  requires  three_way_comparable_with<typename std::unique_ptr<_Tp, _Dp>::pointer, typename std::unique_ptr<_Up, _Ep>::pointer, std::partial_ordering> std::compare_three_way_result_t<typename std::unique_ptr<_Tp, _Dp>::pointer, typename std::unique_ptr<_Up, _Ep>::pointer> std::operator<=>(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)' (reversed)
  895 |     operator<=>(const unique_ptr<_Tp, _Dp>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/unique_ptr.h:895:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::unique_ptr<_Tp, _Dp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/locale_conv.h:41,
                 from /usr/include/c++/11/locale:43,
                 from /usr/include/c++/11/iomanip:43,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:72,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/unique_ptr.h:903:5: note: candidate: 'template<class _Tp, class _Dp>  requires  three_way_comparable<typename std::unique_ptr<_Tp, _Dp>::pointer, std::partial_ordering> std::compare_three_way_result_t<typename std::unique_ptr<_Tp, _Dp>::pointer> std::operator<=>(const std::unique_ptr<_Tp, _Dp>&, std::nullptr_t)' (reversed)
  903 |     operator<=>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
      |     ^~~~~~~~
/usr/include/c++/11/bits/unique_ptr.h:903:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::unique_ptr<_Tp, _Dp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/shared_ptr.h:53,
                 from /usr/include/c++/11/memory:77,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/shared_ptr_base.h:1422:5: note: candidate: 'template<class _Tp, class _Up, __gnu_cxx::_Lock_policy _Lp> std::strong_ordering std::operator<=>(const std::__shared_ptr<_Tp1, _Lp>&, const std::__shared_ptr<_Tp2, _Lp>&)' (reversed)
 1422 |     operator<=>(const __shared_ptr<_Tp, _Lp>& __a,
      |     ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr_base.h:1422:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__shared_ptr<_Tp1, _Lp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/shared_ptr.h:53,
                 from /usr/include/c++/11/memory:77,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/shared_ptr_base.h:1428:5: note: candidate: 'template<class _Tp, __gnu_cxx::_Lock_policy _Lp> std::strong_ordering std::operator<=>(const std::__shared_ptr<_Tp, _Lp>&, std::nullptr_t)' (reversed)
 1428 |     operator<=>(const __shared_ptr<_Tp, _Lp>& __a, nullptr_t) noexcept
      |     ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr_base.h:1428:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__shared_ptr<_Tp, _Lp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/memory:77,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/shared_ptr.h:449:5: note: candidate: 'template<class _Tp, class _Up> std::strong_ordering std::operator<=>(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Tp>&)' (reversed)
  449 |     operator<=>(const shared_ptr<_Tp>& __a,
      |     ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr.h:449:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::shared_ptr<_Tp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/memory:77,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:82,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/shared_ptr.h:455:5: note: candidate: 'template<class _Tp> std::strong_ordering std::operator<=>(const std::shared_ptr<_Tp>&, std::nullptr_t)' (reversed)
  455 |     operator<=>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
      |     ^~~~~~~~
/usr/include/c++/11/bits/shared_ptr.h:455:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::shared_ptr<_Tp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
                 from cyberland.cpp:1:
/usr/include/c++/11/optional:1096:5: note: candidate: 'template<class _Tp, class _Up>  requires  three_way_comparable_with<_Up, _Tp, std::partial_ordering> constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::optional<_Tp>&, const std::optional<_Up>&)' (reversed)
 1096 |     operator<=>(const optional<_Tp>& __x, const optional<_Up>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/optional:1096:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::optional<_Tp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
                 from cyberland.cpp:1:
/usr/include/c++/11/optional:1111:5: note: candidate: 'template<class _Tp> constexpr std::strong_ordering std::operator<=>(const std::optional<_Tp>&, std::nullopt_t)' (reversed)
 1111 |     operator<=>(const optional<_Tp>& __x, nullopt_t) noexcept
      |     ^~~~~~~~
/usr/include/c++/11/optional:1111:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::optional<_Tp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:130,
                 from cyberland.cpp:1:
/usr/include/c++/11/optional:1253:5: note: candidate: 'template<class _Tp, class _Up>  requires !(__is_optional_v<_Up>) && (three_way_comparable_with<_Tp, _Up, std::partial_ordering>) constexpr std::compare_three_way_result_t<_IteratorL, _IteratorR> std::operator<=>(const std::optional<_Tp>&, const _Up&)' (reversed)
 1253 |     operator<=>(const optional<_Tp>& __x, const _Up& __v)
      |     ^~~~~~~~
/usr/include/c++/11/optional:1253:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::optional<_Tp>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/regex:63,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/regex.h:1244:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Alloc> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)' (reversed)
 1244 |     operator<=>(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1244:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/regex:63,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/regex.h:1412:5: note: candidate: 'template<class _Bi_iter> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)' (reversed)
 1412 |     operator<=>(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1412:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/regex:63,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:110,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/regex.h:1585:5: note: candidate: 'template<class _Bi_iter> auto std::__cxx11::operator<=>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)' (reversed)
 1585 |     operator<=>(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/11/bits/regex.h:1585:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:64,
                 from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:473:5: note: candidate: 'template<class _T1, class _T2> constexpr std::common_comparison_category_t<decltype (std::__detail::__synth3way(declval<_T1&>(), declval<_T1&>())), decltype (std::__detail::__synth3way(declval<_T2&>(), declval<_T2&>()))> std::operator<=>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)' (rewritten)
  473 |     operator<=>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_pair.h:473:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::pair<_T1, _T2>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:554:5: note: candidate: 'template<class _Iterator>  requires  three_way_comparable<_Iterator, std::partial_ordering> constexpr std::compare_three_way_result_t<_Iterator, _Iterator> std::operator<=>(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorL>&)' (rewritten)
  554 |     operator<=>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:554:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::reverse_iterator<_IteratorL>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/stl_algobase.h:67,
                 from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_iterator.h:1655:5: note: candidate: 'template<class _Iterator>  requires  three_way_comparable<_Iterator, std::partial_ordering> constexpr std::compare_three_way_result_t<_Iterator, _Iterator> std::operator<=>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)' (rewritten)
 1655 |     operator<=>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_iterator.h:1655:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::move_iterator<_IteratorL>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/bits/basic_string.h:48,
                 from /usr/include/c++/11/string:55,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/string_view:549:5: note: candidate: 'template<class _CharT, class _Traits> constexpr decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(std::basic_string_view<_CharT, _Traits>, std::basic_string_view<_CharT, _Traits>)' (rewritten)
  549 |     operator<=>(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/11/string_view:549:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'kek' is not derived from 'std::basic_string_view<_CharT, _Traits>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/string:55,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/basic_string.h:6262:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> decltype (__char_traits_cmp_cat<_Traits>(0)) std::operator<=>(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)' (rewritten)
 6262 |     operator<=>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/11/bits/basic_string.h:6262:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/tuple:39,
                 from /usr/include/c++/11/functional:54,
                 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 cyberland.cpp:1:
/usr/include/c++/11/array:282:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr std::__detail::__synth3way_t<_T1> std::operator<=>(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)' (rewritten)
  282 |     operator<=>(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
      |     ^~~~~~~~
/usr/include/c++/11/array:282:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::array<_Tp, _Nm>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/vector:67,
                 from /usr/include/c++/11/functional:62,
                 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 cyberland.cpp:1:
/usr/include/c++/11/bits/stl_vector.h:1910:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)' (rewritten)
 1910 |     operator<=>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_vector.h:1910:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::vector<_Tp, _Alloc>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/deque:67,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:68,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_deque.h:2265:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)' (rewritten)
 2265 |     operator<=>(const deque<_Tp, _Alloc>& __x, const deque<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_deque.h:2265:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::deque<_Tp, _Alloc>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/list:63,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:79,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_list.h:2065:5: note: candidate: 'template<class _Tp, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::__cxx11::list<_Tp, _Alloc>&, const std::__cxx11::list<_Tp, _Alloc>&)' (rewritten)
 2065 |     operator<=>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_list.h:2065:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::__cxx11::list<_Tp, _Alloc>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/map:61,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:81,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_map.h:1484:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> std::__detail::__synth3way_t<std::pair<const _Key, _Tp> > std::operator<=>(const std::map<_Key, _Tp, _Compare, _Allocator>&, const std::map<_Key, _Tp, _Compare, _Allocator>&)' (rewritten)
 1484 |     operator<=>(const map<_Key, _Tp, _Compare, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_map.h:1484:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::map<_Key, _Tp, _Compare, _Allocator>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/map:62,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:81,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_multimap.h:1149:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> std::__detail::__synth3way_t<std::pair<const _Key, _Tp> > std::operator<=>(const std::multimap<_Key, _Tp, _Compare, _Allocator>&, const std::multimap<_Key, _Tp, _Compare, _Allocator>&)' (rewritten)
 1149 |     operator<=>(const multimap<_Key, _Tp, _Compare, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_multimap.h:1149:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::multimap<_Key, _Tp, _Compare, _Allocator>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/queue:64,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:86,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_queue.h:392:5: note: candidate: 'template<class _Tp, class _Seq>  requires  three_way_comparable<_Seq, std::partial_ordering> std::compare_three_way_result_t<_Seq> std::operator<=>(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)' (rewritten)
  392 |     operator<=>(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_queue.h:392:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::queue<_Tp, _Seq>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/set:61,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:87,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_set.h:1006:5: note: candidate: 'template<class _Key, class _Compare, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::set<_Key, _Compare, _Allocator>&, const std::set<_Key, _Compare, _Allocator>&)' (rewritten)
 1006 |     operator<=>(const set<_Key, _Compare, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_set.h:1006:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::set<_Key, _Compare, _Allocator>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/set:62,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:87,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_multiset.h:992:5: note: candidate: 'template<class _Key, class _Compare, class _Alloc> std::__detail::__synth3way_t<_T1> std::operator<=>(const std::multiset<_Key, _Compare, _Allocator>&, const std::multiset<_Key, _Compare, _Allocator>&)' (rewritten)
  992 |     operator<=>(const multiset<_Key, _Compare, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_multiset.h:992:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_function.h:400:20: note:   'const kek' is not derived from 'const std::multiset<_Key, _Compare, _Allocator>'
  400 |       { return __x < __y; }
      |                ~~~~^~~~~
In file included from /usr/include/c++/11/stack:61,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:89,
                 from cyberland.cpp:1:
/usr/include/c++/11/bits/stl_stack.h:367:5: note: candidate: 'template<class _Tp, class _Seq>  requires  three_way_comparable<_Seq, std::partial_ordering> std::compare_three_way_result_t<_Seq> std::operator<=>(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)' (rewritten)
  367 |     operator<=>(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
      |     ^~~~~~~~
/usr/include/c++/11/bits/stl_stack.h:367:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/11/string:48,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h