Rezumat problemă

Permutari2

#125

Se citeşte un număr natural nenul n, apoi n numere naturale distincte. Să se afişeze, în ordine lexicografică, permutările mulţimii formate din cele n numere citite.

Fișiere Candale Silviu (silviu) medie

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	Permutari2	Operații I/O	permutari2.in/permutari2.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64208264	Utilizator	Luput Vidican Alessia Maria (Vidican_Alessia)
Fișier	permutari2.cpp	Dimensiune	769 B
Data încărcării	23 Aprilie 2026, 08:20	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

permutari2.cpp:4:13: error: variable ‘std::ifstream cin’ has initializer but incomplete type
    4 | ifstream cin("permutari2.in");
      |             ^
permutari2.cpp:5:14: error: variable ‘std::ofstream cout’ has initializer but incomplete type
    5 | ofstream cout("permutari2.out");
      |              ^
permutari2.cpp: In function ‘void citire()’:
permutari2.cpp:9:5: error: reference to ‘cin’ is ambiguous
    9 |     cin>>n;
      |     ^~~
In file included from permutari2.cpp:1:
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
permutari2.cpp:4:10: note:                 ‘<typeprefixerror>cin’
    4 | ifstream cin("permutari2.in");
      |          ^~~
permutari2.cpp:11:9: error: reference to ‘cin’ is ambiguous
   11 |         cin>>v[i];
      |         ^~~
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
permutari2.cpp:4:10: note:                 ‘<typeprefixerror>cin’
    4 | ifstream cin("permutari2.in");
      |          ^~~
permutari2.cpp:10:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   10 |     for(int i=1;i<=n;i++)
      |     ^~~
permutari2.cpp:12:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   12 |         for(int i=1;i<n;i++)
      |         ^~~
permutari2.cpp: In function ‘void backt(int)’:
permutari2.cpp:26:13: error: reference to ‘cout’ is ambiguous
   26 |             cout<<v[s[j]]<<" ";
      |             ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
permutari2.cpp:5:10: note:                 ‘<typeprefixerror>cout’
    5 | ofstream cout("permutari2.out");
      |          ^~~~
permutari2.cpp:25:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   25 |         for(int j=1;j<=n;j++)
      |         ^~~
permutari2.cpp:27:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   27 |             cout<<'\n';
      |             ^~~~
permutari2.cpp:27:13: error: reference to ‘cout’ is ambiguous
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
permutari2.cpp:5:10: note:                 ‘<typeprefixerror>cout’
    5 | ofstream cout("permutari2.out");
      |          ^~~~

Cum funcționează evaluarea?