Judge Compile-Time Error

Compiled file is missing. Compiler output: C:\Windows\TEMP\tmp78FA.tmp.cpp: In function 'int main()':
C:\Windows\TEMP\tmp78FA.tmp.cpp:14:22: error: ambiguous overload for 'operator>>' (operand types are 'std::stringstream {aka std::basic_stringstream<char>}' and 'char')
  stringstream(mystr) >> typeOfYear;
                      ^
C:\Windows\TEMP\tmp78FA.tmp.cpp:14:22: note: candidates are:
In file included from c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\iostream:40:0,
                 from C:\Windows\TEMP\tmp78FA.tmp.cpp:1:
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:120:7: note: 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>] <near match>
       operator>>(__istream_type& (*__pf)(__istream_type&))
       ^
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:120:7: note:   no known conversion for argument 1 from 'char' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}'
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:124:7: note: 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>] <near match>
       operator>>(__ios_type& (*__pf)(__ios_type&))
       ^
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:124:7: note:   no known conversion for argument 1 from 'char' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}'
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:131:7: note: 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>] <near match>
       operator>>(ios_base& (*__pf)(ios_base&))
       ^
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:131:7: note:   no known conversion for argument 1 from 'char' to 'std::ios_base& (*)(std::ios_base&)'
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:259:7: note: 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>] <near match>
       operator>>(__streambuf_type* __sb);
       ^
c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\istream:259:7: note:   no known conversion for argument 1 from 'char' to 'std::basic_istream<char>::__streambuf_type* {aka std::basic_streambuf<char>*}'