#3670
Afin1
Cifrul Afin este un cifru unde fiecare literă este înlocuită cu o altă literă printr-o operație matematica. Fiecărei litere i se asociază un cod: a-0
, b-1
, c-2
, … z-25
. De asemenea, mai avem două numere a
și b
, numite chei. Fiecare literă se înlocuiește cu litera care are codul egal cu (a*x+b) mod 26
, unde x
este codul literei. Pentru anumite perechi de numere a
și b
rezultatul expresiei (a*x+b) mod 26
poate fi același pentru valori diferite ale lui x
; p pereche a b
cu această proprietate se consideră ineficientă.
Dându-se valoarea celor două chei și un mesaj criptat să se afișeze mesajul decriptat. Dacă a
și b
formează o pereche ineficientă atunci se afișează mesajul -1
.
cifrul Afin
Problema | Afin1 | Operații I/O |
afin1.in /afin1.out
|
---|---|---|---|
Limita timp | 0.1 secunde | Limita memorie |
Total: 64 MB
/
Stivă 8 MB
|
Id soluție | #54395691 | Utilizator | |
Fișier | afin1.cpp | Dimensiune | 755 B |
Data încărcării | 27 Noiembrie 2024, 14:38 | Scor / rezultat | Eroare de compilare |
afin1.cpp: In function 'int main()': afin1.cpp:16:6: error: no match for 'operator>>' (operand types are 'std::ofstream {aka std::basic_ofstream<char>}' and 'char [10001]') g >> crypt; ^ afin1.cpp:16:6: note: candidates are: In file included from /usr/include/c++/4.8/string:53:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from afin1.cpp:1: /usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) operator>>(basic_istream<_CharT, _Traits>& __in, ^ /usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/istream:882:0, from /usr/include/c++/4.8/fstream:38, from afin1.cpp:1: /usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*) operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) ^ /usr/include/c++/4.8/bits/istream.tcc:955:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/istream:882:0, from /usr/include/c++/4.8/fstream:38, from afin1.cpp:1: /usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) ^ /usr/include/c++/4.8/bits/istream.tcc:923:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from afin1.cpp:1: /usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&) operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) ^ /usr/include/c++/4.8/istream:727:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from afin1.cpp:1: /usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&) operator>>(basic_istream<char, _Traits>& __in, signed char& __c) ^ /usr/include/c++/4.8/istream:732:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from afin1.cpp:1: /usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*) operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s) ^ /usr/include/c++/4.8/istream:774:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from afin1.cpp:1: /usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*) operator>>(basic_istream<char, _Traits>& __in, signed char* __s) ^ /usr/include/c++/4.8/istream:779:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>' g >> crypt; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from afin1.cpp:1: /usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ /usr/include/c++/4.8/istream:872:5: note: template argument deduction/substitution failed: afin1.cpp:16:9: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>' g >> crypt; ^
www.pbinfo.ro permite evaluarea a două tipuri de probleme:
Problema Afin1 face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:
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.