/in/foo.cc: In function 'int main()':
/in/foo.cc:7:21: error: no match for 'operator>>' (operand types are 'std::ostream' {aka 'std::basic_ostream<char>'} and 'const char [4]')
    7 |                 cout>>"yes";
      |                 ~~~~^~~~~~~
      |                 |     |
      |                 |     const char [4]
      |                 std::ostream {aka std::basic_ostream<char>}
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/ostream:38,
                 from /usr/include/c++/12/iostream:39,
                 from /in/foo.cc:1:
/usr/include/c++/12/bits/basic_string.tcc:940:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
  940 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.tcc:940:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
In file included from /usr/include/c++/12/istream:1016,
                 from /usr/include/c++/12/iostream:40:
/usr/include/c++/12/bits/istream.tcc:960:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)'
  960 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/12/bits/istream.tcc:960:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
/usr/include/c++/12/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)'
  756 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/12/istream:756:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
/usr/include/c++/12/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)'
  761 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/12/istream:761:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
/usr/include/c++/12/istream:803:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)'
  803 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/12/istream:803:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
/usr/include/c++/12/istream:846:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)'
  846 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/12/istream:846:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
/usr/include/c++/12/istream:852:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)'
  852 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/12/istream:852:5: note:   template argument deduction/substitution failed:
/in/foo.cc:7:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
    7 |                 cout>>"yes";
      |                       ^~~~~
/usr/include/c++/12/istream:1006:5: note: candidate: 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)'
 1006 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/12/istream:1006:5: note:   template argument deduction/substitution failed:
/usr/include/c++/12/istream: In substitution of 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ostream<char>&; _Tp = const char (&)[4]]':
/in/foo.cc:7:9:   required from here
/usr/include/c++/12/istream:1006:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
/in/foo.cc:9:21: error: no match for 'operator>>' (operand types are 'std::ostream' {aka 'std::basic_ostream<char>'} and 'const char [3]')
    9 |                 cout>>"no";
      |                 ~~~~^~~~~~
      |                 |     |
      |                 |     const char [3]
      |                 std::ostream {aka std::basic_ostream<char>}
/usr/include/c++/12/bits/basic_string.tcc:940:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
  940 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.tcc:940:5: note:   template argument deduction/substitution failed:
/in/foo.cc:9:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
    9 |                 cout>>"no";
      |                       ^~~~
/usr/include/c++/12/bits/istream.tcc:960:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)'
  960 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/12/bits/istream.tcc:960:5: note:   template argument deduction/substitution failed:
/in/foo.cc:9:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>'
    9 |                 cout>>"no";
      |                       ^~~~
/usr/include/c++/12/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)'
  756 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/12/istream:756:5: note:   template argument deduction/substitution failed:
/in/foo.cc:9:23: note:   'std::ostream' {aka 'std::basic_ostream<char>'} is not derived from 'std::basic_istream<char, _Traits>'
    9 |                 cout>>"no";
      |                       ^~~~
/usr/include/c++/12/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)'
  761 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/12/istream:761:5: note:   template argument deduction/substitution failed:
/in/foo.cc:9:23: note:   'std::ostream' {aka