Rezumat problemă

ProdusCartezian1

#1277

Se dau două numere naturale nenule n și m. Considerăm mulțimea A={1,2,..,n}. Să se genereze în ordine lexicografică elementele produsului cartezian \( A^m=A \times A \times \cdots \times A \).

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	ProdusCartezian1	Operații I/O	produscartezian1.in/produscartezian1.out
Limita timp	0.7 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64662811	Utilizator	Campan Ayanna (Campan_Ayanna)
Fișier	produscartezian1.cpp	Dimensiune	449 B
Data încărcării	21 Mai 2026, 10:19	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

produscartezian1.cpp:2:20: error: expected ‘;’ before ‘ifstream’
    2 | using namespace std
      |                    ^
      |                    ;
    3 | ifstream cin("produscartezian1.in");
      | ~~~~~~~~            
produscartezian1.cpp: In function ‘int main()’:
produscartezian1.cpp:24:11: error: no match for ‘operator>’ (operand types are ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} and ‘int’)
   24 |     cin>>n>m;
      |     ~~~~~~^~
      |        |   |
      |        |   int
      |        std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
produscartezian1.cpp:24:11: note: candidate: ‘operator>(int, int)’ (built-in)
   24 |     cin>>n>m;
      |     ~~~~~~^~
produscartezian1.cpp:24:11: note:   no known conversion for argument 1 from ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} to ‘int’
In file included from /usr/include/c++/13/string:48,
                 from /usr/include/c++/13/bits/locale_classes.h:40,
                 from /usr/include/c++/13/bits/ios_base.h:41,
                 from /usr/include/c++/13/ios:44,
                 from /usr/include/c++/13/istream:40,
                 from /usr/include/c++/13/fstream:40,
                 from produscartezian1.cpp:1:
/usr/include/c++/13/bits/stl_iterator.h:469:5: note: candidate: ‘template<class _Iterator> bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)’
  469 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:469:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’
   24 |     cin>>n>m;
      |            ^
/usr/include/c++/13/bits/stl_iterator.h:514:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)’
  514 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:514:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’
   24 |     cin>>n>m;
      |            ^
/usr/include/c++/13/bits/stl_iterator.h:1725:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)’
 1725 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1725:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’
   24 |     cin>>n>m;
      |            ^
/usr/include/c++/13/bits/stl_iterator.h:1784:5: note: candidate: ‘template<class _Iterator> bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)’
 1784 |     operator>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1784:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’
   24 |     cin>>n>m;
      |            ^
In file included from /usr/include/c++/13/bits/stl_algobase.h:64,
                 from /usr/include/c++/13/string:51:
/usr/include/c++/13/bits/stl_pair.h:848:5: note: candidate: ‘template<class _T1, class _T2> constexpr bool std::operator>(const pair<_T1, _T2>&, const pair<_T1, _T2>&)’
  848 |     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_pair.h:848:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::pair<_T1, _T2>’
   24 |     cin>>n>m;
      |            ^
In file included from /usr/include/c++/13/string:54:
/usr/include/c++/13/bits/basic_string.h:3870:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
 3870 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3870:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’
   24 |     cin>>n>m;
      |            ^
/usr/include/c++/13/bits/basic_string.h:3884:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)’
 3884 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3884:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’
   24 |     cin>>n>m;
      |            ^
/usr/include/c++/13/bits/basic_string.h:3897:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
 3897 |     operator>(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3897:5: note:   template argument deduction/substitution failed:
produscartezian1.cpp:24:12: note:   mismatched types ‘const _CharT*’ and ‘std::basic_istream<char>’
   24 |     cin>>n>m;
      |            ^

Cum funcționează evaluarea?