Concerte

#include <iostream>
#include <vector>
#include <iomanip>
using namespace std;

struct concert
{
    string oras;
    struct {int zi,luna;} data;
    int pret,dist;
    double cost;
};

int main()
{
    int n; //nr de concerte
    double pb,cm; //pb-pretul benzinei, cm-consumul masinii
    vector <concert> vec;
    int zi,li,zs,ls;
    cin>>n>>pb>>cm;
    cin>>zi>>li>>zs>>ls;
    for(int i=0;i<n;i++)
    {
        concert aux;
        cin>>aux.oras>>aux.data.zi>>aux.data.luna>>aux.pret>>aux.dist;
        if (aux.data.luna<li || aux.data.luna>ls || aux.data.zi<zi || aux.data.zi>zs) //bag concerul in vector doar daca pot sa ajung la el
            vec.push_back(aux);
    }
    for(int i=0;i<vec.size();i++)   //calculez costul fiecarui concert
        vec.at(i).cost=(vec.at(i).pret+2*vec.at(i).dist*pb*cm/3.);
    double min_cost=vec.at(0).cost;
    string oras_final=vec.at(0).oras;
    for(int i=1;i<vec.size();i++)   //determin concerul cel mai ieftin
    {
        if(min_cost>vec.at(i).cost)
        {
            min_cost=vec.at(i).cost;
            oras_final=vec.at(i).oras;
        }
    }
    cout<<oras_final<<' '<<fixed<<setprecision(2)<<min_cost;
    return 0;
}