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	#57867134	Utilizator	Corina Marc (CorinaMarc)
Fișier	palindrom1.cpp	Dimensiune	1.55 KB
Data încărcării	28 Aprilie 2025, 12:28	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

palindrom1.cpp:4:13: error: variable 'std::ifstream cin' has initializer but incomplete type
 ifstream cin("palindrom.in");

             ^
palindrom1.cpp:5:14: error: variable 'std::ofstream cout' has initializer but incomplete type
 ofstream cout("palindrom.out");

              ^
palindrom1.cpp: In function 'bool adaug2(char*, int)':
palindrom1.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<strlen(x)-1;i++)

                           ^
palindrom1.cpp:51:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=0;j<strlen(cap);j++)

                            ^
palindrom1.cpp:44:7: warning: unused variable 'i' [-Wunused-variable]
   int i,ii;

       ^
palindrom1.cpp:44:9: warning: unused variable 'ii' [-Wunused-variable]
   int i,ii;

         ^
palindrom1.cpp: In function 'int main()':
palindrom1.cpp:67:5: error: reference to 'cin' is ambiguous
     cin>>c>>n;

     ^
palindrom1.cpp:4:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("palindrom.in");

          ^
In file included from palindrom1.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
palindrom1.cpp:70:9: error: reference to 'cin' is ambiguous
         cin>>a[i];

         ^
palindrom1.cpp:4:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("palindrom.in");

          ^
In file included from palindrom1.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
palindrom1.cpp:83:5: error: reference to 'cout' is ambiguous
     cout<<nr;

     ^
palindrom1.cpp:5:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("palindrom.out");

          ^
In file included from palindrom1.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
palindrom1.cpp:66:13: warning: unused variable 'ok' [-Wunused-variable]
     int i,n,ok=1,c,j,nr=0;

             ^
palindrom1.cpp:66:20: warning: unused variable 'j' [-Wunused-variable]
     int i,n,ok=1,c,j,nr=0;

                    ^

Cum funcționează evaluarea?