/in/foo.cc: In function 'int main()':
/in/foo.cc:20:24: error: no matching function for call to 'getline(std::string&)'
   20 |                 getline(a[i].dw);
      |                 ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/12/string:54,
                 from /usr/include/c++/12/bits/locale_classes.h:40,
                 from /usr/include/c++/12/bits/ios_base.h:41,
                 from /usr/include/c++/12/ios:42,
                 from /usr/include/c++/12/istream:38,
                 from /usr/include/c++/12/sstream:38,
                 from /usr/include/c++/12/complex:45,
                 from /usr/include/c++/12/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:54,
                 from /in/foo.cc:1:
/usr/include/c++/12/bits/basic_string.tcc:1012:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&, _CharT)'
 1012 |     getline(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~
/usr/include/c++/12/bits/basic_string.tcc:1012:5: note:   template argument deduction/substitution failed:
/in/foo.cc:20:24: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
   20 |                 getline(a[i].dw);
      |                 ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/12/string:53:
/usr/include/c++/12/bits/basic_string.h:3923:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 3923 |     getline(basic_istream<_CharT, _Traits>& __is,
      |     ^~~~~~~
/usr/include/c++/12/bits/basic_string.h:3923:5: note:   template argument deduction/substitution failed:
/in/foo.cc:20:24: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
   20 |                 getline(a[i].dw);
      |                 ~~~~~~~^~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3931:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(basic_istream<_CharT, _Traits>&&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&, _CharT)'
 3931 |     getline(basic_istream<_CharT, _Traits>&& __is,
      |     ^~~~~~~
/usr/include/c++/12/bits/basic_string.h:3931:5: note:   template argument deduction/substitution failed:
/in/foo.cc:20:24: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
   20 |                 getline(a[i].dw);
      |                 ~~~~~~~^~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3938:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(basic_istream<_CharT, _Traits>&&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 3938 |     getline(basic_istream<_CharT, _Traits>&& __is,
      |     ^~~~~~~
/usr/include/c++/12/bits/basic_string.h:3938:5: note:   template argument deduction/substitution failed:
/in/foo.cc:20:24: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
   20 |                 getline(a[i].dw);
      |                 ~~~~~~~^~~~~~~~~
In file included from /usr/include/stdio.h:902,
                 from /usr/include/c++/12/cstdio:42,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:46:
/usr/include/x86_64-linux-gnu/bits/stdio.h:118:1: note: candidate: '__ssize_t getline(char**, size_t*, FILE*)'
  118 | getline (char **__lineptr, size_t *__n, FILE *__stream)
      | ^~~~~~~
/usr/include/x86_64-linux-gnu/bits/stdio.h:118:1: note:   candidate expects 3 arguments, 1 provided