Rezumat problemă

ProdusMaxim

#2422

Se citesc mai multe numere naturale nenule. Fiecare astfel de număr X se va afișa, urmat de un triplet de numere a b c cu proprietatea că a+b+c=X, iar produsul lor este maxim.

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Detalii

Problema	ProdusMaxim	Operații I/O	produsmaxim.in/produsmaxim.out
Limita timp	0.1 secunde	Limita memorie	Total: 0.1 MB / Stivă 0 MB
Id soluție	#57778348	Utilizator	Stefanescu Victor (victor142)
Fișier	produsmaxim.cpp	Dimensiune	403 B
Data încărcării	15 Aprilie 2025, 19:07	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

produsmaxim.cpp: In function 'int main()':
produsmaxim.cpp:8:14: error: no match for 'operator<<' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
     while(fin<<x)

              ^
produsmaxim.cpp:8:14: note: candidates are:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
     ^
/usr/include/c++/4.8/ostream:471:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:476:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
     operator<<(basic_ostream<char, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:482:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
     ^
/usr/include/c++/4.8/ostream:488:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
     ^
/usr/include/c++/4.8/ostream:493:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
     ^
/usr/include/c++/4.8/ostream:513:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/ostream:612:0,
                 from /usr/include/c++/4.8/istream:39,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/ostream:530:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
     ^
/usr/include/c++/4.8/ostream:543:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
     ^
/usr/include/c++/4.8/ostream:548:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     while(fin<<x)

                ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^
/usr/include/c++/4.8/ostream:602:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:8:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     while(fin<<x)

                ^
produsmaxim.cpp:10:47: error: no match for 'operator>>' (operand types are 'std::basic_ostream<char>' and 'const char [2]')
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                               ^
produsmaxim.cpp:10:47: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:10:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==0) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
produsmaxim.cpp:12:47: error: no match for 'operator>>' (operand types are 'std::basic_ostream<char>' and 'const char [2]')
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                               ^
produsmaxim.cpp:12:47: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:12:49: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         if(x%3==1) fout<<x<<" "<<x/3<<" "<<x/3>>" "<<x/3<<endl;

                                                 ^
produsmaxim.cpp:14:38: error: no match for 'operator>>' (operand types are 'std::basic_ostream<char>' and 'const char [2]')
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                      ^
produsmaxim.cpp:14:38: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/fstream:38,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<char, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^
In file included from /usr/include/c++/4.8/fstream:38:0,
                 from produsmaxim.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
produsmaxim.cpp:14:40: note:   'std::basic_ostream<char>' is not derived from 'std::basic_istream<_CharT, _Traits>'
         fout<<x<<" "<<x/3<<" "<<x/3+1>>" "<<x/3+1<<endl;

                                        ^

Cum funcționează evaluarea?