Rezumat problemă

nr_pal

#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.

Fișiere Nodea Eugen (eugen_nodea) Țîr Vlad Ioan medie

Clasa 9 Algoritmi elementari Cifrele unui număr

Rezolvă

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	#64569556	Utilizator	Jiman Alexandru-Ioan (JimanAlexandruIoan)
Fișier	nr_pal.cpp	Dimensiune	1.90 KB
Data încărcării	14 Mai 2026, 20:39	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

nr_pal.cpp: In function ‘int main()’:
nr_pal.cpp:40:22: error: cannot convert ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} to ‘long long int’ in assignment
   40 |         a_original = a;
      |                      ^
      |                      |
      |                      std::string {aka std::__cxx11::basic_string<char>}
nr_pal.cpp:46:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   46 |         for (int j = 1; j < a.length(); j++) {
      |                         ~~^~~~~~~~~~~~
nr_pal.cpp:55:17: error: no matching function for call to ‘stoi(long long int&)’
   55 |         if (stoi(a_original) != 0) nr_pal_a++; // pt 0
      |             ~~~~^~~~~~~~~~~~
In file included from /usr/include/c++/13/string:54,
                 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 nr_pal.cpp:1:
/usr/include/c++/13/bits/basic_string.h:4120:3: note: candidate: ‘int std::__cxx11::stoi(const std::string&, std::size_t*, int)’
 4120 |   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
/usr/include/c++/13/bits/basic_string.h:4120:22: note:   no known conversion for argument 1 from ‘long long int’ to ‘const std::string&’ {aka ‘const std::__cxx11::basic_string<char>&’}
 4120 |   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
      |        ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/13/bits/basic_string.h:4272:3: note: candidate: ‘int std::__cxx11::stoi(const std::wstring&, std::size_t*, int)’
 4272 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
/usr/include/c++/13/bits/basic_string.h:4272:23: note:   no known conversion for argument 1 from ‘long long int’ to ‘const std::wstring&’ {aka ‘const std::__cxx11::basic_string<wchar_t>&’}
 4272 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |        ~~~~~~~~~~~~~~~^~~~~
nr_pal.cpp:58:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   58 |         for (int j = 1; j < b.length(); j++) {
      |                         ~~^~~~~~~~~~~~

Cum funcționează evaluarea?