Rezumat problemă

Sir5

#1083

Se generează un şir de numere naturale ai cărui primi termeni sunt, în ordine:

1, 12, 21, 123, 231, 312, 1234, 2341, 3412, 4123, 12345, 23451,...

Deduceţi regula după care sunt generaţi termenii şirului şi scrieţi un program care să citească numerele naturale k, x, a şi b şi care să determine:

a) ultima cifră a sumei tuturor termenilor şirului care sunt formaţi din cel mult k cifre;
b) succesorul termenului x în şirul dat, x fiind un termen al şirului;
c) numărul de termeni ai şirului care au cifra cea mai semnificativă egală cu a şi nu conţin în scrierea lor cifra b.

OJI 2010, Clasa a V-a

Fișiere Candale Silviu (silviu) Carmen Minca concurs

Clasa 9 Algoritmi elementari Cifrele unui număr

Rezolvă

Detalii

Problema	Sir5	Operații I/O	sir5.in/sir5.out
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64558249	Utilizator	Asavinei Rares (RaresAsavinei)
Fișier	sir5.cpp	Dimensiune	598 B
Data încărcării	14 Mai 2026, 11:01	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

sir5.cpp: In function ‘int main()’:
sir5.cpp:9:1: error: reference to ‘cin’ is ambiguous
    9 | cin>>k>>x>>a>>b;
      | ^~~
In file included from sir5.cpp:1:
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
sir5.cpp:4:10: note:                 ‘std::ifstream cin’
    4 | ifstream cin("sir5.in");
      |          ^~~
sir5.cpp:20:1: error: reference to ‘cout’ is ambiguous
   20 | cout<<s<<endl;
      | ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
sir5.cpp:5:10: note:                 ‘std::ofstream cout’
    5 | ofstream cout("sir5.out");
      |          ^~~~
sir5.cpp:26:5: error: reference to ‘cout’ is ambiguous
   26 |     cout<<(x%(p*10)*10+x/(p*10))*10+x/(p*10)+1<<endl;
      |     ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
sir5.cpp:5:10: note:                 ‘std::ofstream cout’
    5 | ofstream cout("sir5.out");
      |          ^~~~
sir5.cpp:29:5: error: reference to ‘cout’ is ambiguous
   29 |     cout<<x%p*10+x/p<<endl;
      |     ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
sir5.cpp:5:10: note:                 ‘std::ofstream cout’
    5 | ofstream cout("sir5.out");
      |          ^~~~
sir5.cpp:32:8: error: reference to ‘cout’ is ambiguous
   32 | if(a>b)cout<<0;
      |        ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
sir5.cpp:5:10: note:                 ‘std::ofstream cout’
    5 | ofstream cout("sir5.out");
      |          ^~~~
sir5.cpp:33:6: error: reference to ‘cout’ is ambiguous
   33 | else cout<<b-a;
      |      ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
sir5.cpp:5:10: note:                 ‘std::ofstream cout’
    5 | ofstream cout("sir5.out");
      |          ^~~~

Cum funcționează evaluarea?