answer.code: In function ‘void solve()’:
answer.code:156:65: error: too many initializers for ‘std::array<long long int, 3>’
  156 |                         st.in (array<ll, 3>{a[i - 1], lst, i - 1});
      |                                                                 ^
answer.code:167:22: error: deduced type ‘std::array<long long int, 3>’ for ‘<structured bindings>’ is incomplete
  167 |                 auto [x, l1, r1] = *st.be;
      |                      ^~~~~~~~~~~
In file included from /usr/include/c++/13/bits/uses_allocator_args.h:38,
                 from /usr/include/c++/13/bits/memory_resource.h:41,
                 from /usr/include/c++/13/string:58,
                 from /usr/include/c++/13/bits/locale_classes.h:40,
                 from /usr/include/c++/13/bits/ios_base.h:41,
                 from /usr/include/c++/13/ios:44,
                 from /usr/include/c++/13/ostream:40,
                 from /usr/include/c++/13/iostream:41,
                 from answer.code:1:
/usr/include/c++/13/tuple:2005:45: note: declaration of ‘struct std::array<long long int, 3>’
 2005 |   template<typename _Tp, size_t _Nm> struct array;
      |                                             ^~~~~
answer.code:177:58: error: too many initializers for ‘std::array<long long int, 3>’
  177 |                         st.er (array<ll, 3>{a[r0], l0, r0});
      |                                                          ^
answer.code:182:58: error: too many initializers for ‘std::array<long long int, 3>’
  182 |                         st.er (array<ll, 3>{a[r2], l2, r2});
      |                                                          ^
answer.code:187:58: error: too many initializers for ‘std::array<long long int, 3>’
  187 |                         st.er (array<ll, 3>{a[r0], l0, r0});
      |                                                          ^
answer.code:188:58: error: too many initializers for ‘std::array<long long int, 3>’
  188 |                         st.er (array<ll, 3>{a[r2], l2, r2});
      |                                                          ^
answer.code:191:44: error: too many initializers for ‘std::array<long long int, 3>’
  191 |                 st.in (array<ll, 3>{t, l, r});
      |                                            ^
In file included from /usr/include/c++/13/bits/stl_tree.h:69,
                 from /usr/include/c++/13/set:62,
                 from answer.code:6:
/usr/include/c++/13/ext/aligned_buffer.h: In instantiation of ‘struct __gnu_cxx::__aligned_membuf<std::array<long long int, 3> >’:
/usr/include/c++/13/bits/stl_tree.h:231:41:   required from ‘struct std::_Rb_tree_node<std::array<long long int, 3> >’
/usr/include/c++/13/bits/stl_tree.h:359:17:   required from ‘const _Tp& std::_Rb_tree_const_iterator<_Tp>::operator*() const [with _Tp = std::array<long long int, 3>; reference = const std::array<long long int, 3>&]’
answer.code:167:26:   required from here
/usr/include/c++/13/ext/aligned_buffer.h:56:65: error: invalid application of ‘sizeof’ to incomplete type ‘std::array<long long int, 3>’
   56 |       alignas(__alignof__(_Tp2::_M_t)) unsigned char _M_storage[sizeof(_Tp)];
      |                                                                 ^~~~~~~~~~~
In file included from /usr/include/c++/13/bits/move.h:37,
                 from /usr/include/c++/13/bits/exception_ptr.h:41,
                 from /usr/include/c++/13/exception:164,
                 from /usr/include/c++/13/ios:41:
/usr/include/c++/13/type_traits: In instantiation of ‘struct std::is_nothrow_destructible<std::array<long long int, 3> >’:
/usr/include/c++/13/bits/alloc_traits.h:554:41:   required from ‘static constexpr void std::allocator_traits<std::allocator<_CharT> >::destroy(allocator_type&, _Up*) [with _Up = std::array<long long int, 3>; _Tp = std::_Rb_tree_node<std::array<long long int, 3> >; allocator_type = std::allocator<std::_Rb_tree_node<std::array<long long int, 3> > >]’
/usr/include/c++/13/bits/stl_tree.h:625:24:   required from ‘void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_destroy_node(_Link_type) [with _Key = std::array<long long int, 3>; _Val = std::array<long long int, 3>; _KeyOfValue = std::_Identity<std::array<long long int, 3> >; _Compare = std::less<std::array<long long int, 3> >; _Alloc = std::allocator<std::array<long long int, 3> >; _Link_type = std::_Rb_tree_node<std::array<long long int, 3> >*]’
/usr/include/c++/13/bits/stl_tree.h:633:2:   required from ‘void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_drop_node(_Link_type) [with _Key = std::array<long long int, 3>; _Val = std::array<long long int, 3>; _KeyOfValue = std::_Identity<std::array<long long int, 3> >; _Compare = std::less<std::array<long long int, 3> >; _Alloc = std::allocator<std::array<long long int, 3> >; _Link_type = std::_Rb_tree_node<std::array<long long int, 3> >*]’
/usr/include/c++/13/bits/stl_tree.h:1938:4:   required from ‘void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare,...