Rezumat problemă

palindrom1

#4790

Se dă un număr natural N și apoi N numere naturale, toate având același număr de cifre.
1) Determinați câte dintre cele N numere sunt palindrom.
2) Determinați câte dintre cele N numere pot deveni palindrom prin inserarea în acestea a câte unei cifre.
3) Determinați câte dintre cele N numere pot deveni palindrom prin inserarea în acestea a câte două cifre.

OJI 2025, clasa a 5-a

Fișiere Pracsiu Dan (dnprx) Dan Constantin Spătărel concurs

Clasa 9 Algoritmi elementari Cifrele unui număr

Rezolvă

Detalii

Problema	palindrom1	Operații I/O	palindrom.in/palindrom.out
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#62301815	Utilizator	Manea Eric (Manea_Eric)
Fișier	palindrom1.cpp	Dimensiune	1.42 KB
Data încărcării	16 Ianuarie 2026, 14:48	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

palindrom1.cpp:4:14: error: variable 'std::ifstream fin' has initializer but incomplete type
 ifstream fin(palindrom.in);

              ^
palindrom1.cpp:4:14: error: 'palindrom' was not declared in this scope
palindrom1.cpp:5:15: error: variable 'std::ofstream fout' has initializer but incomplete type
 ofstream fout(palindrom.out);

               ^
palindrom1.cpp:5:15: error: 'palindrom' was not declared in this scope
palindrom1.cpp: In function 'int main()':
palindrom1.cpp:8:8: error: 'c' was not declared in this scope
     if(c==2)

        ^
palindrom1.cpp:10:9: error: 'nr' was not declared in this scope
         nr=0;

         ^
palindrom1.cpp:11:14: error: 'x' was not declared in this scope
         fin>>x;

              ^
palindrom1.cpp:12:13: error: 'i' was not declared in this scope
         for(i=1;i<=n;i++)

             ^
palindrom1.cpp:12:20: error: 'n' was not declared in this scope
         for(i=1;i<=n;i++)

                    ^
palindrom1.cpp:15:13: error: 'cx' was not declared in this scope
             cx=x;

             ^
palindrom1.cpp:16:13: error: 'nc' was not declared in this scope
             nc=0;

             ^
palindrom1.cpp:18:19: error: 'cx' was not declared in this scope
             while(cx>0)

                   ^
palindrom1.cpp:20:17: error: 'nc' was not declared in this scope
                 nc++;

                 ^
palindrom1.cpp:22:13: error: expected ';' before '}' token
             }

             ^
palindrom1.cpp:23:16: error: 'nc' was not declared in this scope
             if(nc%2==0)

                ^
palindrom1.cpp:25:17: error: 'k' was not declared in this scope
                 k=nc/2-1;

                 ^
palindrom1.cpp:26:17: error: 'a' was not declared in this scope
                 a=0;

                 ^
palindrom1.cpp:27:17: error: 'cx' was not declared in this scope
                 cx=x;

                 ^
palindrom1.cpp:30:21: error: 'cif' was not declared in this scope
                     cif=cx%10;

                     ^
palindrom1.cpp:35:17: error: 'd' was not declared in this scope
                 d=0;

                 ^
palindrom1.cpp:54:31: error: 'n' was not declared in this scope
                             k=n/c;

                               ^
palindrom1.cpp: At global scope:
palindrom1.cpp:63:5: error: expected unqualified-id before 'return'
     return 0;

     ^
palindrom1.cpp:64:1: error: expected declaration before '}' token
 }

 ^

Cum funcționează evaluarea?