Rezumat problemă

PermPF

#202

Se citeşte un număr natural nenul n. Să se afişeze, în ordine lexicografică, permutările fără puncte fixe ale mulţimii {1,2,..,n}.

Fișiere Candale Silviu (silviu) medie

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	PermPF	Operații I/O	permpf.in/permpf.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64739603	Utilizator	Marinescu Andrei (Andrei461)
Fișier	permpf.cpp	Dimensiune	668 B
Data încărcării	27 Mai 2026, 08:40	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

permpf.cpp:2:1: error: stray ‘##’ in program
    2 | ##include <fstream>
      | ^~
permpf.cpp:2:3: error: ‘include’ does not name a type
    2 | ##include <fstream>
      |   ^~~~~~~
permpf.cpp:4:1: error: ‘ifstream’ does not name a type
    4 | ifstream fin("permfp.in");
      | ^~~~~~~~
permpf.cpp:5:1: error: ‘ofstream’ does not name a type
    5 | ofstream fout("permpf.out");
      | ^~~~~~~~
permpf.cpp: In function ‘void afisare(int)’:
permpf.cpp:22:9: error: ‘fout’ was not declared in this scope
   22 |         fout<<x[i]<<" ";
      |         ^~~~
permpf.cpp:23:5: error: ‘fout’ was not declared in this scope
   23 |     fout<<endl;
      |     ^~~~
permpf.cpp:23:11: error: ‘endl’ was not declared in this scope; did you mean ‘std::endl’?
   23 |     fout<<endl;
      |           ^~~~
      |           std::endl
In file included from /usr/include/c++/13/iostream:41,
                 from permpf.cpp:1:
/usr/include/c++/13/ostream:735:5: note: ‘std::endl’ declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
permpf.cpp: In function ‘void Back(int)’:
permpf.cpp:30:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else]
   30 |         if (valid(k))
      |            ^
permpf.cpp: In function ‘int main()’:
permpf.cpp:41:4: error: ‘fin’ was not declared in this scope
   41 |    fin>>n;
      |    ^~~

Cum funcționează evaluarea?