Rezumat problemă

Dijkstra

#588

Se dă un graf orientat ponderat – în care fiecare arc are asociat un cost, număr natural strict pozitiv, și un nod p. Să se determine, folosind algoritmul lui Dijkstra, costul minim al drumului de la p la fiecare nod al grafului.

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Teoria Grafurilor Grafuri cu costuri Algoritmul lui Dijkstra

Rezolvă

Detalii

Problema	Dijkstra	Operații I/O	dijkstra.in/dijkstra.out
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#63316861	Utilizator	Stepanov Bogdan (stepanovbogdan)
Fișier	dijkstra.cpp	Dimensiune	1.38 KB
Data încărcării	26 Februarie 2026, 08:20	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

dijkstra.cpp: In function 'void dijkstra(int)':
dijkstra.cpp:44:43: warning: left operand of comma operator has no effect [-Wunused-value]
                 pq.push({-cost[neighbour, neighbour});

                                           ^
dijkstra.cpp:44:52: error: expected ']' before '}' token
                 pq.push({-cost[neighbour, neighbour});

                                                    ^
dijkstra.cpp:44:53: error: no matching function for call to 'std::priority_queue<std::pair<long long int, int> >::push(<brace-enclosed initializer list>)'
                 pq.push({-cost[neighbour, neighbour});

                                                     ^
dijkstra.cpp:44:53: note: candidates are:
In file included from /usr/include/c++/4.8/queue:64:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:85,
                 from dijkstra.cpp:1:
/usr/include/c++/4.8/bits/stl_queue.h:496:7: note: void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = std::pair<long long int, int>; _Sequence = std::vector<std::pair<long long int, int>, std::allocator<std::pair<long long int, int> > >; _Compare = std::less<std::pair<long long int, int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<long long int, int>]
       push(const value_type& __x)
       ^
/usr/include/c++/4.8/bits/stl_queue.h:496:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type& {aka const std::pair<long long int, int>&}'
/usr/include/c++/4.8/bits/stl_queue.h:504:7: note: void std::priority_queue<_Tp, _Sequence, _Compare>::push(std::priority_queue<_Tp, _Sequence, _Compare>::value_type&&) [with _Tp = std::pair<long long int, int>; _Sequence = std::vector<std::pair<long long int, int>, std::allocator<std::pair<long long int, int> > >; _Compare = std::less<std::pair<long long int, int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<long long int, int>]
       push(value_type&& __x)
       ^
/usr/include/c++/4.8/bits/stl_queue.h:504:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::priority_queue<std::pair<long long int, int> >::value_type&& {aka std::pair<long long int, int>&&}'

Cum funcționează evaluarea?