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Detalii evaluare #64569479
Rezumat problemă
#2415
Se dau n întrebări de forma: Câte palindromuri există în intervalul [a,b]?, unde a și b sunt numere naturale date, cu a ≤ b.
Nodea Eugen (eugen_nodea) Detalii
| Problema | nr_pal | Operații I/O |
nr_pal.in/nr_pal.out
|
|---|---|---|---|
| Limita timp | 0.2 secunde | Limita memorie |
Total: 4 MB
/
Stivă 2 MB
|
| Id soluție | #64569479 | Utilizator |
Jiman Alexandru-Ioan (JimanAlexandruIoan)
|
| Fișier | nr_pal.cpp | Dimensiune | 1.83 KB |
| Data încărcării | 14 Mai 2026, 20:29 | Scor/rezultat | Eroare de compilare |
Evaluare
Mesaj compilare
nr_pal.cpp: In function ‘int main()’: nr_pal.cpp:40:15: error: no match for ‘operator!=’ (operand types are ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} and ‘int’) 40 | if (a != 0) a = to_string(stoi(a) - 1); | ~ ^~ ~ | | | | | int | std::string {aka std::__cxx11::basic_string<char>} In file included from /usr/include/c++/13/iosfwd:42, from /usr/include/c++/13/ios:40, from /usr/include/c++/13/ostream:40, from /usr/include/c++/13/iostream:41, from nr_pal.cpp:1: /usr/include/c++/13/bits/postypes.h:197:5: note: candidate: ‘template<class _StateT> bool std::operator!=(const fpos<_StateT>&, const fpos<_StateT>&)’ 197 | operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs) | ^~~~~~~~ /usr/include/c++/13/bits/postypes.h:197:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::fpos<_StateT>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/c++/13/string:43, 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: /usr/include/c++/13/bits/allocator.h:245:5: note: candidate: ‘template<class _T1, class _T2> bool std::operator!=(const allocator<_CharT>&, const allocator<_T2>&)’ 245 | operator!=(const allocator<_T1>&, const allocator<_T2>&) | ^~~~~~~~ /usr/include/c++/13/bits/allocator.h:245:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::allocator<_CharT>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/c++/13/string:48: /usr/include/c++/13/bits/stl_iterator.h:462:5: note: candidate: ‘template<class _Iterator> bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)’ 462 | operator!=(const reverse_iterator<_Iterator>& __x, | ^~~~~~~~ /usr/include/c++/13/bits/stl_iterator.h:462:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ /usr/include/c++/13/bits/stl_iterator.h:507:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)’ 507 | operator!=(const reverse_iterator<_IteratorL>& __x, | ^~~~~~~~ /usr/include/c++/13/bits/stl_iterator.h:507:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ /usr/include/c++/13/bits/stl_iterator.h:1697:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)’ 1697 | operator!=(const move_iterator<_IteratorL>& __x, | ^~~~~~~~ /usr/include/c++/13/bits/stl_iterator.h:1697:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ /usr/include/c++/13/bits/stl_iterator.h:1763:5: note: candidate: ‘template<class _Iterator> bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)’ 1763 | operator!=(const move_iterator<_Iterator>& __x, | ^~~~~~~~ /usr/include/c++/13/bits/stl_iterator.h:1763:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/c++/13/bits/stl_algobase.h:64, from /usr/include/c++/13/string:51: /usr/include/c++/13/bits/stl_pair.h:842:5: note: candidate: ‘template<class _T1, class _T2> constexpr bool std::operator!=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)’ 842 | operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) | ^~~~~~~~ /usr/include/c++/13/bits/stl_pair.h:842:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::pair<_T1, _T2>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/c++/13/string:54: /usr/include/c++/13/bits/basic_string.h:3788:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’ 3788 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.h:3788:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: mismatched types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘int’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ /usr/include/c++/13/bits/basic_string.h:3802:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’ 3802 | operator!=(const _CharT* __lhs, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.h:3802:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: mismatched types ‘const _CharT*’ and ‘std::__cxx11::basic_string<char>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ /usr/include/c++/13/bits/basic_string.h:3815:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)’ 3815 | operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs, | ^~~~~~~~ /usr/include/c++/13/bits/basic_string.h:3815:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: mismatched types ‘const _CharT*’ and ‘int’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/c++/13/bits/locale_facets.h:48, from /usr/include/c++/13/bits/basic_ios.h:37, from /usr/include/c++/13/ios:46: /usr/include/c++/13/bits/streambuf_iterator.h:242:5: note: candidate: ‘template<class _CharT, class _Traits> bool std::operator!=(const istreambuf_iterator<_CharT, _Traits>&, const istreambuf_iterator<_CharT, _Traits>&)’ 242 | operator!=(const istreambuf_iterator<_CharT, _Traits>& __a, | ^~~~~~~~ /usr/include/c++/13/bits/streambuf_iterator.h:242:5: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} is not derived from ‘const std::istreambuf_iterator<_CharT, _Traits>’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/x86_64-linux-gnu/c++/13/bits/c++allocator.h:33, from /usr/include/c++/13/bits/allocator.h:46: /usr/include/c++/13/bits/new_allocator.h:222:9: note: candidate: ‘template<class _Up> bool std::operator!=(const __new_allocator<char>&, const __new_allocator<_Tp>&)’ 222 | operator!=(const __new_allocator&, const __new_allocator<_Up>&) | ^~~~~~~~ /usr/include/c++/13/bits/new_allocator.h:222:9: note: template argument deduction/substitution failed: nr_pal.cpp:40:18: note: mismatched types ‘const std::__new_allocator<_Tp>’ and ‘int’ 40 | if (a != 0) a = to_string(stoi(a) - 1); | ^ In file included from /usr/include/c++/13/bits/ios_base.h:46: /usr/include/c++/13/system_error:525:3: note: candidate: ‘bool std::operator!=(const error_code&, const error_code&)’ 525 | operator!=(const error_code& __lhs, const error_code& __rhs) noexcept | ^~~~~~~~ /usr/include/c++/13/system_error:525:32: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} to ‘const std::error_code&’ 525 | operator!=(const error_code& __lhs, const error_code& __rhs) noexcept | ~~~~~~~~~~~~~~~~~~^~~~~ /usr/include/c++/13/system_error:530:3: note: candidate: ‘bool std::operator!=(const error_code&, const error_condition&)’ 530 | operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept | ^~~~~~~~ /usr/include/c++/13/system_error:530:32: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} to ‘const std::error_code&’ 530 | operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept | ~~~~~~~~~~~~~~~~~~^~~~~ /usr/include/c++/13/system_error:535:3: note: candidate: ‘bool std::operator!=(const error_condition&, const error_code&)’ 535 | operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept | ^~~~~~~~ /usr/include/c++/13/system_error:535:37: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} to ‘const std::error_condition&’ 535 | operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept | ~~~~~~~~~~~~~~~~~~~~~~~^~~~~ /usr/include/c++/13/system_error:540:3: note: candidate: ‘bool std::operator!=(const error_condition&, const error_condition&)’ 540 | operator!=(const error_condition& __lhs, | ^~~~~~~~ /usr/include/c++/13/system_error:540:37: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} to ‘const std::error_condition&’ 540 | operator!=(const error_condition& __lhs, | ~~~~~~~~~~~~~~~~~~~~~~~^~~~~ /usr/include/c++/13/bits/allocator.h:222:7: note: candidate: ‘bool std::operator!=(const allocator<char>&, const allocator<char>&)’ 222 | operator!=(const allocator&, const allocator&) _GLIBCXX_NOTHROW | ^~~~~~~~ /usr/include/c++/13/bits/allocator.h:222:18: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} to ‘const std::allocator<char>&’ 222 | operator!=(const allocator&, const allocator&) _GLIBCXX_NOTHROW | ^~~~~~~~~~~~~~~~ nr_pal.cpp:45:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare] 45 | for (int j = 1; j < a.length(); j++) { | ~~^~~~~~~~~~~~ nr_pal.cpp:57:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare] 57 | for (int j = 1; j < b.length(); j++) { | ~~^~~~~~~~~~~~
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 nr_pal 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.