Rezumat problemă

Oxford

#4357

Premierul Marii Britanii, Rishi Sunak, a decis să reorganizeze structura administrativă a comitatului Oxfordshire. În Oxfordshire sunt prezente N orașe numerotate de la 1 la N, conectate prin M autostrăzi (drumuri unidirecționale ce conectează două orașe). Rishi a hotărât ca toate orașele cu proprietatea că cetățenii tuturor celorlalte orașe pot ajunge în ele prin intermediul autostrăzilor să devină reședințe. Deoarece numărul de orașe și autostrăzi din Oxfordshire este foarte mare, Rishi vă cere ajutorul în rezolvarea a două probleme cheie.
1. Care sunt indicii orașelor reședință din Oxfordshire.
2. Care este distanța minimă de la fiecare oraș până la cea mai apropiată reședință de acel oraș.

Info-Oltenia 2023, individual 11-12

Consola Pracsiu Dan (dnprx) Vlad-Ioan Țîr concurs

Clasa 11 Teoria Grafurilor Grafuri cu costuri Algoritmul lui Dijkstra Algoritmul lui Kosaraju

Rezolvă

Detalii

Problema	Oxford	Operații I/O	tastatură/ecran
Limita timp	0.5 secunde	Limita memorie	Total: 128 MB / Stivă 64 MB
Id soluție	#56489050	Utilizator	luh geek (yeat)
Fișier	oxford.cpp	Dimensiune	2.56 KB
Data încărcării	21 Februarie 2025, 17:24	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

oxford.cpp: In function 'void dfs1(int)':
oxford.cpp:20:15: error: expected unqualified-id before '[' token
     for (auto [next, _] : adj[node]) {

               ^
oxford.cpp:20:15: error: expected ';' before '[' token
oxford.cpp:20:22: error: '_' was not declared in this scope
     for (auto [next, _] : adj[node]) {

                      ^
oxford.cpp: In lambda function:
oxford.cpp:20:25: error: expected '{' before ':' token
     for (auto [next, _] : adj[node]) {

                         ^
oxford.cpp: In function 'void dfs1(int)':
oxford.cpp:20:15: error: overloaded function with no contextual type information
     for (auto [next, _] : adj[node]) {

               ^
oxford.cpp:20:25: error: expected ';' before ':' token
     for (auto [next, _] : adj[node]) {

                         ^
oxford.cpp:20:25: error: expected primary-expression before ':' token
oxford.cpp:20:25: error: expected ')' before ':' token
oxford.cpp:20:25: error: expected primary-expression before ':' token
oxford.cpp:20:25: error: expected ';' before ':' token
oxford.cpp: In function 'void dfs2(int, int)':
oxford.cpp:29:15: error: expected unqualified-id before '[' token
     for (auto [next, _] : rev_adj[node]) {

               ^
oxford.cpp:29:15: error: expected ';' before '[' token
oxford.cpp:29:22: error: '_' was not declared in this scope
     for (auto [next, _] : rev_adj[node]) {

                      ^
oxford.cpp: In lambda function:
oxford.cpp:29:25: error: expected '{' before ':' token
     for (auto [next, _] : rev_adj[node]) {

                         ^
oxford.cpp: In function 'void dfs2(int, int)':
oxford.cpp:29:15: error: overloaded function with no contextual type information
     for (auto [next, _] : rev_adj[node]) {

               ^
oxford.cpp:29:25: error: expected ';' before ':' token
     for (auto [next, _] : rev_adj[node]) {

                         ^
oxford.cpp:29:25: error: expected primary-expression before ':' token
oxford.cpp:29:25: error: expected ')' before ':' token
oxford.cpp:29:25: error: expected primary-expression before ':' token
oxford.cpp:29:25: error: expected ';' before ':' token
oxford.cpp: In function 'std::vector<int> dijkstra(const std::vector<int>&)':
oxford.cpp:36:67: error: wrong number of template arguments (0, should be 1)
     priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> pq;

                                                                   ^
In file included from /usr/include/c++/4.8/string:48:0,
                 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 oxford.cpp:1:
/usr/include/c++/4.8/bits/stl_function.h:222:12: error: provided for 'template<class _Tp> struct std::greater'
     struct greater : public binary_function<_Tp, _Tp, bool>
            ^
oxford.cpp:36:68: error: template argument 3 is invalid
     priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> pq;

                                                                    ^
oxford.cpp:36:73: error: invalid type in declaration before ';' token
     priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> pq;

                                                                         ^
oxford.cpp:41:12: error: request for member 'emplace' in 'pq', which is of non-class type 'int'
         pq.emplace(0, src);

            ^
oxford.cpp:44:16: error: request for member 'empty' in 'pq', which is of non-class type 'int'
     while (!pq.empty()) {

                ^
oxford.cpp:45:14: error: expected unqualified-id before '[' token
         auto [d, node] = pq.top();

              ^
oxford.cpp:46:12: error: request for member 'pop' in 'pq', which is of non-class type 'int'
         pq.pop();

            ^
oxford.cpp:48:13: error: 'd' was not declared in this scope
         if (d > dist[node]) continue;

             ^
oxford.cpp:48:22: error: 'node' was not declared in this scope
         if (d > dist[node]) continue;

                      ^
oxford.cpp:50:19: error: expected unqualified-id before '[' token
         for (auto [next, cost] : adj[node]) {

                   ^
oxford.cpp:50:19: error: expected ';' before '[' token
oxford.cpp:50:26: error: 'cost' was not declared in this scope
         for (auto [next, cost] : adj[node]) {

                          ^
oxford.cpp: In lambda function:
oxford.cpp:50:32: error: expected '{' before ':' token
         for (auto [next, cost] : adj[node]) {

                                ^
oxford.cpp: In function 'std::vector<int> dijkstra(const std::vector<int>&)':
oxford.cpp:50:19: error: overloaded function with no contextual type information
         for (auto [next, cost] : adj[node]) {

                   ^
oxford.cpp:50:32: error: expected ';' before ':' token
         for (auto [next, cost] : adj[node]) {

                                ^
oxford.cpp:50:32: error: expected primary-expression before ':' token
oxford.cpp:50:32: error: expected ')' before ':' token
oxford.cpp:50:32: error: expected primary-expression before ':' token
oxford.cpp:50:32: error: expected ';' before ':' token
oxford.cpp:111:1: error: expected '}' at end of input
 }

 ^
oxford.cpp:111:1: error: expected '}' at end of input
oxford.cpp:111:1: warning: no return statement in function returning non-void [-Wreturn-type]

Cum funcționează evaluarea?