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Detalii evaluare #58078931

Rezumat problemă

#2782 Prada

Pe un câmp orizontal se află doi stâlpi perpendiculari pe sol în punctele A și B. În vârful fiecărui stâlp se află o pasăre de pradă. Pe dreapta d determinată de punctele A si B apare un șoarece în punctul C. Cele două păsări zboară spre șoarece în linie dreaptă cu aceeași viteză.

Cunoscând HA = înălțimea primului stâlp, HB = înălțimea celui de-al doilea stâlp, D = distanța dintre cei doi stâlpi, să se afle distanța X dintre șoarece și baza stâlpului mai înalt astfel încât păsările să ajungă la șoarece în același timp și să-l împartă frățește.

Rezolvă

Detalii

Problema Prada Operații I/O tastatură/ecran
Limita timp 1 secunde Limita memorie Total: 128 MB / Stivă 64 MB
Id soluție #58078931 Utilizator Supuran Dragos (Dragos_ss)
Fișier prada.cpp Dimensiune 161 B
Data încărcării 13 Mai 2025, 09:02 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

prada.cpp: In function 'int main()':
prada.cpp:8:12: error: no match for 'operator>' (operand types are 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' and 'int')
     cin>>ha>hb>>d;

            ^
prada.cpp:8:12: note: candidates are:
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prada.cpp:1:
/usr/include/c++/4.8/bits/stl_pair.h:233:5: note: template<class _T1, class _T2> constexpr bool std::operator>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^
/usr/include/c++/4.8/bits/stl_pair.h:233:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::pair<_T1, _T2>'
     cin>>ha>hb>>d;

                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prada.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:309:5: note: template<class _Iterator> bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator>(const reverse_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:309:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::reverse_iterator<_Iterator>'
     cin>>ha>hb>>d;

                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prada.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:359:5: note: template<class _IteratorL, class _IteratorR> bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator>(const reverse_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:359:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::reverse_iterator<_Iterator>'
     cin>>ha>hb>>d;

                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prada.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1079:5: note: template<class _IteratorL, class _IteratorR> bool std::operator>(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator>(const move_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1079:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::move_iterator<_Iterator>'
     cin>>ha>hb>>d;

                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prada.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1085:5: note: template<class _Iterator> bool std::operator>(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator>(const move_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1085:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::move_iterator<_Iterator>'
     cin>>ha>hb>>d;

                 ^
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 prada.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2606:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2606:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     cin>>ha>hb>>d;

                 ^
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 prada.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2618:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2618:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     cin>>ha>hb>>d;

                 ^
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 prada.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2630:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2630:5: note:   template argument deduction/substitution failed:
prada.cpp:8:17: note:   mismatched types 'const _CharT*' and 'std::basic_istream<char>'
     cin>>ha>hb>>d;

                 ^
prada.cpp:9:5: error: 'x' was not declared in this scope
     x=(hb*hb+d*d-ha*ha)/(2*d)

     ^
prada.cpp:10:5: error: expected ';' before 'cout'
     cout<<x;

     ^

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 Prada 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.