Rezumat problemă

Shuffle

#205

Se citeşte un număr natural nenul n şi o permutare a mulţimii M={1,2,..,n}. Să se afişeze, în ordine lexicografică, toate permutările mulţimii M care nu conţin elemente alăturate care au fost alăturate şi în permutarea dată.

Fișiere Candale Silviu (silviu) medie

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	Shuffle	Operații I/O	shuffle.in/shuffle.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64330231	Utilizator	Oncioiu Matei (Oncioiu_Matei)
Fișier	shuffle.cpp	Dimensiune	1.14 KB
Data încărcării	30 Aprilie 2026, 08:31	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

shuffle.cpp:9:13: error: variable ‘std::ifstream cin’ has initializer but incomplete type
    9 | ifstream cin("shuffle.in");
      |             ^
shuffle.cpp:10:14: error: variable ‘std::ofstream cout’ has initializer but incomplete type
   10 | ofstream cout("shuffle.out");
      |              ^
shuffle.cpp: In function ‘void citire()’:
shuffle.cpp:15:5: error: reference to ‘cin’ is ambiguous
   15 |     cin>>n;
      |     ^~~
In file included from shuffle.cpp:6:
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
shuffle.cpp:9:10: note:                 ‘<typeprefixerror>cin’
    9 | ifstream cin("shuffle.in");
      |          ^~~
shuffle.cpp:19:9: error: reference to ‘cin’ is ambiguous
   19 |         cin>>x;
      |         ^~~
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
shuffle.cpp:9:10: note:                 ‘<typeprefixerror>cin’
    9 | ifstream cin("shuffle.in");
      |          ^~~
shuffle.cpp: In function ‘void bact(int)’:
shuffle.cpp:29:13: error: reference to ‘cout’ is ambiguous
   29 |             cout<<s[j]<<" ";
      |             ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
shuffle.cpp:10:10: note:                 ‘<typeprefixerror>cout’
   10 | ofstream cout("shuffle.out");
      |          ^~~~
shuffle.cpp:30:9: error: reference to ‘cout’ is ambiguous
   30 |         cout<<'\n';
      |         ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
shuffle.cpp:10:10: note:                 ‘<typeprefixerror>cout’
   10 | ofstream cout("shuffle.out");
      |          ^~~~
shuffle.cpp: In function ‘int main()’:
shuffle.cpp:62:9: error: reference to ‘cout’ is ambiguous
   62 |         cout<<"nu exista";
      |         ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
shuffle.cpp:10:10: note:                 ‘<typeprefixerror>cout’
   10 | ofstream cout("shuffle.out");
      |          ^~~~
shuffle.cpp:61:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   61 |     if (sol==0)
      |     ^~
shuffle.cpp:62:27: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   62 |         cout<<"nu exista";
      |                           ^
shuffle.cpp:62:27: error: expected ‘}’ at end of input
shuffle.cpp:52:1: note: to match this ‘{’
   52 | {
      | ^

Cum funcționează evaluarea?