Rezumat problemă

pin

#4588

Piticul Doc și-a securizat pin-ul cardului bancar într-un mod cunoscut doar de el. Pin-ul este format din exact 4 cifre. Doc dispune de o mulțime de informații numerice dispuse pe R rânduri. Fiecare cifră din pin-ul cardului bancar este un element majoritar pe rândul său, adică numărul de apariții ale cifrei respective este mai mare decât n / 2, unde n reprezintă numărul total de cifre de pe rândul respectiv. Tu poți afla pin-ul lui Doc sau crezi că a greșit securizarea pin-ului? Cunoscând numărul R de rânduri și numerele de pe fiecare rând, scrieţi un program care să determine pin-ul lui Doc.

OMI Iasi 2024

Fișiere Pracsiu Dan (dnprx) Lucian Neagu concurs

Clasa 9 Tablouri unidimensionale (vectori) Parcurgerea vectorilor Element majoritar

Rezolvă

Detalii

Problema	pin	Operații I/O	pin.in/pin.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 2 MB
Id soluție	#62930469	Utilizator	darabaneanu mara (Maraa_2023)
Fișier	pin.cpp	Dimensiune	906 B
Data încărcării	06 Februarie 2026, 19:46	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

pin.cpp:8:12: error: 'char rand [20241]' redeclared as different kind of symbol
 char rand[L], pin[1001];

            ^
In file included from /usr/include/c++/4.8/cstdlib:72:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:47,
                 from pin.cpp:1:
/usr/include/stdlib.h:374:12: error: previous declaration of 'int rand()'
 extern int rand (void) __THROW;
            ^
pin.cpp: In function 'int main()':
pin.cpp:17:28: error: no matching function for call to 'std::basic_ifstream<char>::getline(int (&)()throw (), int)'
         fin.getline(rand, L);

                            ^
pin.cpp:17:28: note: candidates are:
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from pin.cpp:1:
/usr/include/c++/4.8/istream:618:5: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::getline(std::basic_istream<_CharT, _Traits>::char_type*, std::streamsize, std::basic_istream<_CharT, _Traits>::char_type) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::char_type = char; std::streamsize = int]
     basic_istream<char>::
     ^
/usr/include/c++/4.8/istream:618:5: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/4.8/istream:427:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::getline(std::basic_istream<_CharT, _Traits>::char_type*, std::streamsize) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::char_type = char; std::streamsize = int]
       getline(char_type* __s, streamsize __n)
       ^
/usr/include/c++/4.8/istream:427:7: note:   no known conversion for argument 1 from 'int()throw ()' to 'std::basic_istream<char>::char_type* {aka char*}'
pin.cpp:21:21: warning: pointer to a function used in arithmetic [-Wpointer-arith]
         while(rand[i]!=0)

                     ^
pin.cpp:23:22: warning: pointer to a function used in arithmetic [-Wpointer-arith]
             if(rand[i]!=' ')

                      ^
pin.cpp:23:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
             if(rand[i]!=' ')

                         ^
pin.cpp:26:25: warning: pointer to a function used in arithmetic [-Wpointer-arith]
                 c=rand[i]-48;

                         ^
pin.cpp:26:27: warning: pointer to a function used in arithmetic [-Wpointer-arith]
                 c=rand[i]-48;

                           ^
pin.cpp:26:26: error: invalid conversion from 'int (*)()throw ()' to 'int' [-fpermissive]
                 c=rand[i]-48;

                          ^
pin.cpp:35:17: error: 'lgpin' was not declared in this scope
                 lgpin++;                  

                 ^
pin.cpp:39:8: error: 'lgpin' was not declared in this scope
     if(lgpin==4)                    

        ^

Cum funcționează evaluarea?