answer.code: In function ‘ld f1(ld)’:
answer.code:213:11: error: missing template arguments before ‘p’
  213 |     Point p(cosl(ang) * R, sinl(ang) * R);
      |           ^
answer.code:214:33: error: no match for ‘operator-’ (operand types are ‘Point<long long int> [10011]’ and ‘__gnu_cxx::__alloc_traits<std::allocator<Point<long long int> >, Point<long long int> >::value_type’ {aka ‘Point<long long int>’})
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
In file included from /usr/include/c++/13/bits/stl_algobase.h:67,
                 from /usr/include/c++/13/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:51,
                 from answer.code:5:
/usr/include/c++/13/bits/stl_iterator.h:625:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) std::operator-(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)’
  625 |     operator-(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:625:5: note:   template argument deduction/substitution failed:
answer.code:214:41: note:   mismatched types ‘const std::reverse_iterator<_Iterator>’ and ‘Point<long long int> [10011]’
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
      |                                         ^
/usr/include/c++/13/bits/stl_iterator.h:1800:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)’
 1800 |     operator-(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1800:5: note:   template argument deduction/substitution failed:
answer.code:214:41: note:   mismatched types ‘const std::move_iterator<_IteratorL>’ and ‘Point<long long int> [10011]’
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
      |                                         ^
In file included from /usr/include/c++/13/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:127:
/usr/include/c++/13/complex:365:5: note: candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&, const complex<_Tp>&)’
  365 |     operator-(const complex<_Tp>& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/13/complex:365:5: note:   template argument deduction/substitution failed:
answer.code:214:41: note:   mismatched types ‘const std::complex<_Tp>’ and ‘Point<long long int> [10011]’
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
      |                                         ^
/usr/include/c++/13/complex:374:5: note: candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&, const _Tp&)’
  374 |     operator-(const complex<_Tp>& __x, const _Tp& __y)
      |     ^~~~~~~~
/usr/include/c++/13/complex:374:5: note:   template argument deduction/substitution failed:
answer.code:214:41: note:   mismatched types ‘const std::complex<_Tp>’ and ‘Point<long long int> [10011]’
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
      |                                         ^
/usr/include/c++/13/complex:383:5: note: candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const _Tp&, const complex<_Tp>&)’
  383 |     operator-(const _Tp& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/13/complex:383:5: note:   template argument deduction/substitution failed:
answer.code:214:41: note:   ‘__gnu_cxx::__alloc_traits<std::allocator<Point<long long int> >, Point<long long int> >::value_type’ {aka ‘Point<long long int>’} is not derived from ‘const std::complex<_Tp>’
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
      |                                         ^
/usr/include/c++/13/complex:460:5: note: candidate: ‘template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&)’
  460 |     operator-(const complex<_Tp>& __x)
      |     ^~~~~~~~
/usr/include/c++/13/complex:460:5: note:   template argument deduction/substitution failed:
answer.code:214:41: note:   mismatched types ‘const std::complex<_Tp>’ and ‘Point<long long int> [10011]’
  214 |     return my_abs(vector_prod(p - v[IND1], p - v[IND2])) / 2.0l;
      |                                         ^
In file included from /usr/include/c++/13/valarray:605,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:166:
/usr/include/c++/13/bits/valarray_after.h:406:5: note: candidate: ‘template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__minus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__minus, typename _Dom1::value_type>::result_type> std::operator-(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)’
  406 |     _DEFINE_EXPR_BINARY_OPE...