02.Three brothers

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

int main()
{
    double first_brother_cleaning;
    double second_brother_cleaning;
    double third_brother_cleaning;
    double father_fisihng;

    cin >> first_brother_cleaning >> second_brother_cleaning >> third_brother_cleaning
        >> father_fisihng;

    double total_time = 1 / (1 / first_brother_cleaning + 1 / second_brother_cleaning
        + 1 / third_brother_cleaning);
    double time_with_relax = total_time * 1.15;
    double left_hours = father_fisihng - time_with_relax;

    cout << "Cleaning time: " << fixed << setprecision(2) << time_with_relax << endl;

    if (time_with_relax < father_fisihng)
    {
        cout << "Yes, there is a surprise - time left -> " << fixed << setprecision(0)
        <<floor(left_hours) << " hours." << endl;
    }
    else
    {
        cout << "No, there isn't a surprise - shortage of time -> "
        << fixed << setprecision(0) << ceil(abs(left_hours)) <<" hours." << endl;
    }
    return 0;
}