Detalii evaluare: ~54178020

Detalii evaluare #54178020

Rezumat problema
Detalii
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Rezumat problemă

`#589` Roy-Floyd

Se dă un graf orientat ponderat cu n noduri și m arce – în care fiecare arc are asociat un cost, număr natural strict pozitiv. Folosind algoritmul Roy-Floyd, construiți matricea costurilor minime.

Fișiere
Candale Silviu (silviu)
ușoară

Clasa 11 Teoria Grafurilor Grafuri cu costuri

Rezolvă

Detalii

Problema	Roy-Floyd	Operații I/O	`roy-floyd.in`/`roy-floyd.out`
Limita timp	0.1 secunde	Limita memorie	Total: `64 MB` / Stivă `8 MB`
Id soluție	`#54178020`	Utilizator	Imbria Adelina (AdelinaImbria)
Fișier	roy-floyd.cpp	Dimensiune	867 B
Data încărcării	21 Noiembrie 2024, 13:12	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

roy-floyd.cpp: In function 'void citire_matrice()':
roy-floyd.cpp:11:8: error: no match for 'operator<<' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
     fin<<n<<m;

        ^
roy-floyd.cpp:11:8: note: candidates are:
In file included from /usr/include/c++/4.8/string:52:0,
                 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
     ^
/usr/include/c++/4.8/ostream:471:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:476:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
     operator<<(basic_ostream<char, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:482:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
     ^
/usr/include/c++/4.8/ostream:488:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
     ^
/usr/include/c++/4.8/ostream:493:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
     ^
/usr/include/c++/4.8/ostream:513:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/ostream:612:0,
                 from /usr/include/c++/4.8/iostream:39,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/ostream:530:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
     ^
/usr/include/c++/4.8/ostream:543:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
     ^
/usr/include/c++/4.8/ostream:548:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     fin<<n<<m;

          ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from roy-floyd.cpp:1:
/usr/include/c++/4.8/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^
/usr/include/c++/4.8/ostream:602:5: note:   template argument deduction/substitution failed:
roy-floyd.cpp:11:10: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     fin<<n<<m;

          ^
roy-floyd.cpp:12:9: error: 'i' was not declared in this scope
     for(i=1; i<=n; i++){

         ^
roy-floyd.cpp:13:13: error: 'j' was not declared in this scope
         for(j=1; j<=n; j++)

             ^
roy-floyd.cpp:3:14: error: expected primary-expression before '=' token
 #define pinf = 1000000000000;

              ^
roy-floyd.cpp:15:23: note: in expansion of macro 'pinf'
             C[i][j] = pinf;

                       ^
roy-floyd.cpp:17:14: error: 'j' was not declared in this scope
         C[i][j] = 0;

              ^
roy-floyd.cpp:19:16: error: 'x' was not declared in this scope
     while(fin>>x>>y>>c)

                ^
roy-floyd.cpp:19:19: error: 'y' was not declared in this scope
     while(fin>>x>>y>>c)

                   ^
roy-floyd.cpp:19:22: error: 'c' was not declared in this scope
     while(fin>>x>>y>>c)

                      ^
roy-floyd.cpp: In function 'int main()':
roy-floyd.cpp:36:12: error: 'citire' was not declared in this scope
     citire();

            ^
roy-floyd.cpp:35:9: warning: unused variable 'x' [-Wunused-variable]
     int x, y, c;

         ^
roy-floyd.cpp:35:12: warning: unused variable 'y' [-Wunused-variable]
     int x, y, c;

            ^
roy-floyd.cpp:35:15: warning: unused variable 'c' [-Wunused-variable]
     int x, y, c;

               ^

Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:

probleme la care rezolvarea presupune scrierea unui program complet
probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.

Problema Roy-Floyd face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:

Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.

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.