Mining rig

#include <iostream>
#include <cmath>
using namespace std;

                                                     // Mining rig
int main()
{
    double card, thing, current, win;
    cin >> card >> thing >> current >> win;
    double sum = card * 13 + thing * 13 + 1000;
    double perday = (win - current) * 13;
    double payback = ceil(sum / perday);
    printf("%.0f\n", sum);
    printf("%.0f\n", payback);
    return 0;
}