<div class="solution-view">
    <h3>Run id: 104998</h3>
            <pre>Main.cc: In function 'int main()':
Main.cc:6:11: error: no match for 'operator&lt;&lt;' (operand types are 'std::basic_istream::__istream_type {aka std::basic_istream}' and '')
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;, const std::__cxx11::basic_string&lt;_CharT, _Traits, _Alloc&gt;&amp;)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os,
     ^
/usr/include/c++/5/bits/basic_string.h:5172:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;, const std::error_code&amp;)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, const error_code&amp; __e)
     ^
/usr/include/c++/5/system_error:209:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;, _CharT)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __out, _CharT __c)
     ^
/usr/include/c++/5/ostream:497:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;, char)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __out, char __c)
     ^
/usr/include/c++/5/ostream:502:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt; std::basic_ostream&amp; std::operator&lt;&lt;(std::basic_ostream&amp;, char)
     operator&lt;&lt;(basic_ostream&amp; __out, char __c)
     ^
/usr/include/c++/5/ostream:508:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
     cin&gt;&gt;a&lt; std::basic_ostream&amp; std::operator&lt;&lt;(std::basic_ostream&amp;, signed char)
     operator&lt;&lt;(basic_ostream&amp; __out, signed char __c)
     ^
/usr/include/c++/5/ostream:514:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
     cin&gt;&gt;a&lt; std::basic_ostream&amp; std::operator&lt;&lt;(std::basic_ostream&amp;, unsigned char)
     operator&lt;&lt;(basic_ostream&amp; __out, unsigned char __c)
     ^
/usr/include/c++/5/ostream:519:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;, const _CharT*)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __out, const _CharT* __s)
     ^
/usr/include/c++/5/ostream:539:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;, const char*)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __out, const char* __s)
     ^
/usr/include/c++/5/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt; std::basic_ostream&amp; std::operator&lt;&lt;(std::basic_ostream&amp;, const char*)
     operator&lt;&lt;(basic_ostream&amp; __out, const char* __s)
     ^
/usr/include/c++/5/ostream:556:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
     cin&gt;&gt;a&lt; std::basic_ostream&amp; std::operator&lt;&lt;(std::basic_ostream&amp;, const signed char*)
     operator&lt;&lt;(basic_ostream&amp; __out, const signed char* __s)
     ^
/usr/include/c++/5/ostream:569:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
     cin&gt;&gt;a&lt; std::basic_ostream&amp; std::operator&lt;&lt;(std::basic_ostream&amp;, const unsigned char*)
     operator&lt;&lt;(basic_ostream&amp; __out, const unsigned char* __s)
     ^
/usr/include/c++/5/ostream:574:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
     cin&gt;&gt;a&lt; std::basic_ostream&lt;_CharT, _Traits&gt;&amp; std::operator&lt;&lt;(std::basic_ostream&lt;_CharT, _Traits&gt;&amp;&amp;, const _Tp&amp;)
     operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp;&amp; __os, const _Tp&amp; __x)
     ^
/usr/include/c++/5/ostream:628:5: note:   template argument deduction/substitution failed:
Main.cc:6:13: note:   'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream&lt;_CharT, _Traits&gt;'
     cin&gt;&gt;a&lt;</pre>
    </div>