Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:46:16: error: ‘a’ was not declared in this scope fin >> a >> b; ^ user.cpp:46:21: error: ‘b’ was not declared in this scope fin >> a >> b; ^ user.cpp:53:9: error: ‘selected’ was not declared in this scope selected[nod] = true; ^ user.cpp:54:9: error: ‘value’ was not declared in this scope value[nod] = color; ^ user.cpp:55:9: error: ‘events’ was not declared in this scope events.push_back({color, nod}); ^ user.cpp:58:10: error: ‘events’ was not declared in this scope sort(events.begin(), events.end()); ^