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Compile Error

foo.cc: In function 'int main()':
foo.cc:219:38: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and '<unresolved overloaded function type>')
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:120:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  120 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/9/istream:120:36: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'}
  120 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |                  ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/istream:124:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]'
  124 |       operator>>(__ios_type& (*__pf)(__ios_type&))
      |       ^~~~~~~~
/usr/include/c++/9/istream:124:32: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'}
  124 |       operator>>(__ios_type& (*__pf)(__ios_type&))
      |                  ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/usr/include/c++/9/istream:131:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  131 |       operator>>(ios_base& (*__pf)(ios_base&))
      |       ^~~~~~~~
/usr/include/c++/9/istream:131:30: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::ios_base& (*)(std::ios_base&)'
  131 |       operator>>(ios_base& (*__pf)(ios_base&))
      |                  ~~~~~~~~~~~~^~~~~~~~~~~~~~~~
/usr/include/c++/9/istream:168:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  168 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:168:24: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'bool&'
  168 |       operator>>(bool& __n)
      |                  ~~~~~~^~~
/usr/include/c++/9/istream:172:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]'
  172 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/9/istream:172:25: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short int&'
  172 |       operator>>(short& __n);
      |                  ~~~~~~~^~~
/usr/include/c++/9/istream:175:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  175 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:175:34: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short unsigned int&'
  175 |       operator>>(unsigned short& __n)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:179:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]'
  179 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/9/istream:179:23: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'int&'
  179 |       operator>>(int& __n);
      |                  ~~~~~^~~
/usr/include/c++/9/istream:182:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  182 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:182:32: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'unsigned int&'
  182 |       operator>>(unsigned int& __n)
      |                  ~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:186:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  186 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:186:24: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long int&'
  186 |       operator>>(long& __n)
      |                  ~~~~~~^~~
/usr/include/c++/9/istream:190:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  190 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:190:33: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long unsigned int&'
  190 |       operator>>(unsigned long& __n)
      |                  ~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:195:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  195 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:195:29: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long int&'
  195 |       operator>>(long long& __n)
      |                  ~~~~~~~~~~~^~~
/usr/include/c++/9/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  199 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:199:38: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long unsigned int&'
  199 |       operator>>(unsigned long long& __n)
      |                  ~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:214:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  214 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/9/istream:214:25: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'float&'
  214 |       operator>>(float& __f)
      |                  ~~~~~~~^~~
/usr/include/c++/9/istream:218:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  218 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/9/istream:218:26: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'double&'
  218 |       operator>>(double& __f)
      |                  ~~~~~~~~^~~
/usr/include/c++/9/istream:222:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  222 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/9/istream:222:31: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long double&'
  222 |       operator>>(long double& __f)
      |                  ~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:235:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  235 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/9/istream:235:25: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'void*&'
  235 |       operator>>(void*& __p)
      |                  ~~~~~~~^~~
/usr/include/c++/9/istream:259:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>]'
  259 |       operator>>(__streambuf_type* __sb);
      |       ^~~~~~~~
/usr/include/c++/9/istream:259:36: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__streambuf_type*' {aka 'std::basic_streambuf<char>*'}
  259 |       operator>>(__streambuf_type* __sb);
      |                  ~~~~~~~~~~~~~~~~~~^~~~
In file included from /usr/include/c++/9/string:56,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/ostream:38,
                 from /usr/include/c++/9/iostream:39,
                 from foo.cc:1:
/usr/include/c++/9/bits/basic_string.tcc:1466:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 1466 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/9/bits/basic_string.tcc:1466:5: note:   template argument deduction/substitution failed:
foo.cc:219:40: note:   couldn't deduce template parameter '_Alloc'
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/istream:991,
                 from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/bits/istream.tcc:931:5: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) [with _CharT = char; _Traits = std::char_traits<char>]'
  931 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/9/bits/istream.tcc:931:62: note:   no known conversion for argument 2 from '<unresolved overloaded function type>' to 'char&'
  931 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |                                                      ~~~~~~~~^~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)'
  756 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/9/istream:756:5: note:   template argument deduction/substitution failed:
foo.cc:219:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'unsigned char&'
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)'
  761 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/9/istream:761:5: note:   template argument deduction/substitution failed:
foo.cc:219:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'signed char&'
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:799:5: note: candidate: 'std::basic_istream<_CharT2, _Traits2>& std::operator>>(std::basic_istream<_CharT2, _Traits2>&, _CharT2*) [with _CharT2 = char; _Traits2 = std::char_traits<char>; _CharT = char; _Traits = std::char_traits<char>]'
  799 |     operator>>(basic_istream<char>& __in, char* __s);
      |     ^~~~~~~~
In file included from /usr/include/c++/9/ios:43,
                 from /usr/include/c++/9/ostream:38,
                 from /usr/include/c++/9/iostream:39,
                 from foo.cc:1:
/usr/include/c++/9/streambuf:171:55: note:   no known conversion for argument 2 from '<unresolved overloaded function type>' to 'char*'
  171 |         operator>>(basic_istream<_CharT2, _Traits2>&, _CharT2*);
      |                                                       ^~~~~~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:803:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)'
  803 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/9/istream:803:5: note:   template argument deduction/substitution failed:
foo.cc:219:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'unsigned char*'
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:808:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)'
  808 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/9/istream:808:5: note:   template argument deduction/substitution failed:
foo.cc:219:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'signed char*'
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:980:5: note: candidate: 'template<class _Istream, class _Tp> typename std::enable_if<std::__and_<std::__not_<std::is_lvalue_reference<_Tp> >, std::__is_convertible_to_basic_istream<_Istream>, std::__is_extractable<typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type, _Tp&&, void> >::value, typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type>::type std::operator>>(_Istream&&, _Tp&&)'
  980 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/9/istream:980:5: note:   template argument deduction/substitution failed:
foo.cc:219:40: note:   couldn't deduce template parameter '_Tp'
  219 |  cin>>year1>>month1>>day1>>h1>>m1>>s1>>endl;
      |                                        ^~~~
foo.cc:222:38: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and '<unresolved overloaded function type>')
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:120:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  120 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/9/istream:120:36: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'}
  120 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |                  ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/istream:124:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]'
  124 |       operator>>(__ios_type& (*__pf)(__ios_type&))
      |       ^~~~~~~~
/usr/include/c++/9/istream:124:32: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'}
  124 |       operator>>(__ios_type& (*__pf)(__ios_type&))
      |                  ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/usr/include/c++/9/istream:131:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  131 |       operator>>(ios_base& (*__pf)(ios_base&))
      |       ^~~~~~~~
/usr/include/c++/9/istream:131:30: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::ios_base& (*)(std::ios_base&)'
  131 |       operator>>(ios_base& (*__pf)(ios_base&))
      |                  ~~~~~~~~~~~~^~~~~~~~~~~~~~~~
/usr/include/c++/9/istream:168:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  168 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:168:24: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'bool&'
  168 |       operator>>(bool& __n)
      |                  ~~~~~~^~~
/usr/include/c++/9/istream:172:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]'
  172 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/9/istream:172:25: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short int&'
  172 |       operator>>(short& __n);
      |                  ~~~~~~~^~~
/usr/include/c++/9/istream:175:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  175 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:175:34: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short unsigned int&'
  175 |       operator>>(unsigned short& __n)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:179:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]'
  179 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/9/istream:179:23: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'int&'
  179 |       operator>>(int& __n);
      |                  ~~~~~^~~
/usr/include/c++/9/istream:182:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  182 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:182:32: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'unsigned int&'
  182 |       operator>>(unsigned int& __n)
      |                  ~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:186:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  186 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:186:24: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long int&'
  186 |       operator>>(long& __n)
      |                  ~~~~~~^~~
/usr/include/c++/9/istream:190:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  190 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:190:33: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long unsigned int&'
  190 |       operator>>(unsigned long& __n)
      |                  ~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:195:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  195 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:195:29: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long int&'
  195 |       operator>>(long long& __n)
      |                  ~~~~~~~~~~~^~~
/usr/include/c++/9/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  199 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/9/istream:199:38: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long unsigned int&'
  199 |       operator>>(unsigned long long& __n)
      |                  ~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:214:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  214 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/9/istream:214:25: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'float&'
  214 |       operator>>(float& __f)
      |                  ~~~~~~~^~~
/usr/include/c++/9/istream:218:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  218 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/9/istream:218:26: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'double&'
  218 |       operator>>(double& __f)
      |                  ~~~~~~~~^~~
/usr/include/c++/9/istream:222:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  222 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/9/istream:222:31: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long double&'
  222 |       operator>>(long double& __f)
      |                  ~~~~~~~~~~~~~^~~
/usr/include/c++/9/istream:235:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
  235 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/9/istream:235:25: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'void*&'
  235 |       operator>>(void*& __p)
      |                  ~~~~~~~^~~
/usr/include/c++/9/istream:259:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>]'
  259 |       operator>>(__streambuf_type* __sb);
      |       ^~~~~~~~
/usr/include/c++/9/istream:259:36: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__streambuf_type*' {aka 'std::basic_streambuf<char>*'}
  259 |       operator>>(__streambuf_type* __sb);
      |                  ~~~~~~~~~~~~~~~~~~^~~~
In file included from /usr/include/c++/9/string:56,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/ostream:38,
                 from /usr/include/c++/9/iostream:39,
                 from foo.cc:1:
/usr/include/c++/9/bits/basic_string.tcc:1466:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 1466 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/9/bits/basic_string.tcc:1466:5: note:   template argument deduction/substitution failed:
foo.cc:222:40: note:   couldn't deduce template parameter '_Alloc'
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/istream:991,
                 from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/bits/istream.tcc:931:5: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) [with _CharT = char; _Traits = std::char_traits<char>]'
  931 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/9/bits/istream.tcc:931:62: note:   no known conversion for argument 2 from '<unresolved overloaded function type>' to 'char&'
  931 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |                                                      ~~~~~~~~^~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)'
  756 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/9/istream:756:5: note:   template argument deduction/substitution failed:
foo.cc:222:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'unsigned char&'
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)'
  761 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/9/istream:761:5: note:   template argument deduction/substitution failed:
foo.cc:222:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'signed char&'
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:799:5: note: candidate: 'std::basic_istream<_CharT2, _Traits2>& std::operator>>(std::basic_istream<_CharT2, _Traits2>&, _CharT2*) [with _CharT2 = char; _Traits2 = std::char_traits<char>; _CharT = char; _Traits = std::char_traits<char>]'
  799 |     operator>>(basic_istream<char>& __in, char* __s);
      |     ^~~~~~~~
In file included from /usr/include/c++/9/ios:43,
                 from /usr/include/c++/9/ostream:38,
                 from /usr/include/c++/9/iostream:39,
                 from foo.cc:1:
/usr/include/c++/9/streambuf:171:55: note:   no known conversion for argument 2 from '<unresolved overloaded function type>' to 'char*'
  171 |         operator>>(basic_istream<_CharT2, _Traits2>&, _CharT2*);
      |                                                       ^~~~~~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:803:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)'
  803 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/9/istream:803:5: note:   template argument deduction/substitution failed:
foo.cc:222:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'unsigned char*'
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:808:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)'
  808 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/9/istream:808:5: note:   template argument deduction/substitution failed:
foo.cc:222:40: note:   cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'signed char*'
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |                                        ^~~~
In file included from /usr/include/c++/9/iostream:40,
                 from foo.cc:1:
/usr/include/c++/9/istream:980:5: note: candidate: 'template<class _Istream, class _Tp> typename std::enable_if<std::__and_<std::__not_<std::is_lvalue_reference<_Tp> >, std::__is_convertible_to_basic_istream<_Istream>, std::__is_extractable<typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type, _Tp&&, void> >::value, typename std::__is_convertible_to_basic_istream<_Tp>::__istream_type>::type std::operator>>(_Istream&&, _Tp&&)'
  980 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/9/istream:980:5: note:   template argument deduction/substitution failed:
foo.cc:222:40: note:   couldn't deduce template parameter '_Tp'
  222 |  cin>>year2>>month2>>day2>>h2>>m2>>s2>>endl;
      |                                        ^~~~
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信息

递交者
类型
自测
题目
P1008 OO1-6 日期时间类DateTime
语言
C++
递交时间
2022-05-16 16:09:14
评测时间
2022-05-16 16:09:14
评测机
分数
0
总耗时
0ms
峰值内存
0 Bytes