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Detalii evaluare #64672746
Rezumat problemă
#3077
Scrieți un program care citește un număr natural nenul n și care calculează suma tuturor numerelor distincte prefixe pentru n.
Minca Carmen (carmen) Detalii
| Problema | suma_prefixe | Operații I/O |
 tastatură/ecran
|
|---|---|---|---|
| Limita timp | 0.1 secunde | Limita memorie |
Total: 64 MB
/
Stivă 8 MB
|
| Id soluție | #64672746 | Utilizator |
Deconescu Marian-Florin (Marian2_8)
|
| Fișier | suma_prefixe.cpp | Dimensiune | 440 B |
| Data încărcării | 21 Mai 2026, 18:47 | Scor/rezultat | Eroare de compilare |
Evaluare
Mesaj compilare
suma_prefixe.cpp: In function ‘int main()’: suma_prefixe.cpp:8:7: error: no match for ‘operator>>’ (operand types are ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} and ‘int’) 8 | in>>x>>y; | ~~^~~ | | | | | int | std::ofstream {aka std::basic_ofstream<char>} suma_prefixe.cpp:8:7: note: candidate: ‘operator>>(int, int)’ (built-in) 8 | in>>x>>y; | ~~^~~ suma_prefixe.cpp:8:7: note: no known conversion for argument 1 from ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} to ‘int’ In file included from /usr/include/c++/13/string:55, from /usr/include/c++/13/bits/locale_classes.h:40, from /usr/include/c++/13/bits/ios_base.h:41, from /usr/include/c++/13/ios:44, from /usr/include/c++/13/ostream:40, from /usr/include/c++/13/iostream:41, from suma_prefixe.cpp:1: /usr/include/c++/13/bits/basic_string.tcc:827:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’ 827 | operator>>(basic_istream<_CharT, _Traits>& __in, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.tcc:827:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’ 8 | in>>x>>y; | ^ In file included from /usr/include/c++/13/istream:1106, from /usr/include/c++/13/iostream:42: /usr/include/c++/13/bits/istream.tcc:975:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)’ 975 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | ^~~~~~~~ /usr/include/c++/13/bits/istream.tcc:975:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’ 8 | in>>x>>y; | ^ /usr/include/c++/13/istream:846:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)’ 846 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:846:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 8 | in>>x>>y; | ^ /usr/include/c++/13/istream:851:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)’ 851 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:851:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 8 | in>>x>>y; | ^ /usr/include/c++/13/istream:893:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)’ 893 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) | ^~~~~~~~ /usr/include/c++/13/istream:893:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’ 8 | in>>x>>y; | ^ /usr/include/c++/13/istream:936:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)’ 936 | operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:936:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 8 | in>>x>>y; | ^ /usr/include/c++/13/istream:942:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)’ 942 | operator>>(basic_istream<char, _Traits>& __in, signed char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:942:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:8:9: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 8 | in>>x>>y; | ^ /usr/include/c++/13/istream:1096:5: note: candidate: ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)’ 1096 | operator>>(_Istream&& __is, _Tp&& __x) | ^~~~~~~~ /usr/include/c++/13/istream:1096:5: note: template argument deduction/substitution failed: /usr/include/c++/13/istream: In substitution of ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ofstream<char>&; _Tp = int&]’: suma_prefixe.cpp:8:9: required from here /usr/include/c++/13/istream:1096:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’ suma_prefixe.cpp:9:13: error: no match for ‘operator>>’ (operand types are ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} and ‘int’) 9 | while(in>>z){ | ~~^~~ | | | | | int | std::ofstream {aka std::basic_ofstream<char>} suma_prefixe.cpp:9:13: note: candidate: ‘operator>>(int, int)’ (built-in) 9 | while(in>>z){ | ~~^~~ suma_prefixe.cpp:9:13: note: no known conversion for argument 1 from ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} to ‘int’ /usr/include/c++/13/bits/basic_string.tcc:827:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’ 827 | operator>>(basic_istream<_CharT, _Traits>& __in, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.tcc:827:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/bits/istream.tcc:975:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)’ 975 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | ^~~~~~~~ /usr/include/c++/13/bits/istream.tcc:975:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/istream:846:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)’ 846 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:846:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/istream:851:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)’ 851 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c) | ^~~~~~~~ /usr/include/c++/13/istream:851:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/istream:893:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)’ 893 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) | ^~~~~~~~ /usr/include/c++/13/istream:893:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/istream:936:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)’ 936 | operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:936:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/istream:942:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)’ 942 | operator>>(basic_istream<char, _Traits>& __in, signed char* __s) | ^~~~~~~~ /usr/include/c++/13/istream:942:5: note: template argument deduction/substitution failed: suma_prefixe.cpp:9:15: note: ‘std::ofstream’ {aka ‘std::basic_ofstream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’ 9 | while(in>>z){ | ^ /usr/include/c++/13/istream:1096:5: note: candidate: ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)’ 1096 | operator>>(_Istream&& __is, _Tp&& __x) | ^~~~~~~~ /usr/include/c++/13/istream:1096:5: note: template argument deduction/substitution failed: /usr/include/c++/13/istream: In substitution of ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ofstream<char>&; _Tp = int&]’: suma_prefixe.cpp:9:15: required from here /usr/include/c++/13/istream:1096:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’ suma_prefixe.cpp:10:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else] 10 | if(y>x and y>z) if(abs(x-z)<difmin){ | ^
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 suma_prefixe 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.