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Detalii evaluare #62866864

Rezumat problemă

balaur
#3328

A fost o dată un balaur cu 6 capete. Într-o zi Făt-Frumos s-a supărat şi i-a tăiat un cap. Peste noapte i-au crescut alte 6 capete în loc. Pe acelaşi gât! A doua zi, Făt-Frumos iar i-a tăiat un cap, dar peste noapte balaurului i-au crescut în loc alte 6 capete … şi tot aşa timp de n zile. În cea de a ( n+1 )-a zi, Făt-Frumos s-a plictisit şi a plecat acasă!

Scrieţi un program care citeşte de la tastatură n , numărul de zile, şi care afişează pe ecran câte capete avea balaurul după n zile.

OJI 2002 clasa V
Consola PARMI NOUS (traianflorianalin) concurs
Clasa 9 Elemente de baza ale limbajului Operatori și expresii
Rezolvă

Detalii

Problema balaur Operații I/O tastatură/ecran
Limita timp 0.1 secunde Limita memorie Total: 64 MB / Stivă 8 MB
Id soluție #62866864 Utilizator Gaita Antonia elena (antoniaavocado)
Fișier balaur.cpp Dimensiune 102 B
Data încărcării 04 Februarie 2026, 16:55 Scor/rezultat Eroare de compilare

Evaluare

Mesaj compilare

balaur.cpp: In function 'int main()':
balaur.cpp:7:7: error: no match for 'operator<<' (operand types are 'std::istream {aka std::basic_istream<char>}' and 'long long int')
    cin<<n;

       ^
balaur.cpp:7:7: note: candidates are:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from balaur.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
     ^
/usr/include/c++/4.8/ostream:471:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:476:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
     operator<<(basic_ostream<char, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:482:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
     ^
/usr/include/c++/4.8/ostream:488:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
     ^
/usr/include/c++/4.8/ostream:493:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
     ^
/usr/include/c++/4.8/ostream:513:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/ostream:612:0,
                 from /usr/include/c++/4.8/iostream:39,
                 from balaur.cpp:1:
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/ostream:530:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
     ^
/usr/include/c++/4.8/ostream:543:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
     ^
/usr/include/c++/4.8/ostream:548:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
    cin<<n;

         ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from balaur.cpp:1:
/usr/include/c++/4.8/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^
/usr/include/c++/4.8/ostream:602:5: note:   template argument deduction/substitution failed:
balaur.cpp:7:9: note:   'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
    cin<<n;

         ^

Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:

  • probleme la care rezolvarea presupune scrierea unui program complet
  • probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.

Problema balaur face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:

  • Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
  • Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.

Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.

Du-te sus!