06. Bills

#include <iostream>

using namespace std;

int main() {
    const int MONTHLY_BILL_FOR_WATER = 20;
    const int MONTHLY_BILL_FOR_INTERNET = 15;
    const double OTHER_BILLS_RERCENTAGE = 1.20;

    int months;
    cin >> months;

    double totalElectricityBill = 0, currentElectricityBill;

    for (int i = 0; i < months; i++) {
        cin >> currentElectricityBill;
        totalElectricityBill += currentElectricityBill;
    }

    double totalWaterBill = months * MONTHLY_BILL_FOR_WATER;
    double totalInternetBill = months * MONTHLY_BILL_FOR_INTERNET;
    double totalOtherBills = (totalElectricityBill + totalWaterBill + totalInternetBill) * OTHER_BILLS_RERCENTAGE;
    double average = (totalElectricityBill + totalWaterBill + totalInternetBill + totalOtherBills) / months;

    cout.setf(ios::fixed);
    cout.precision(2);

    cout << "Electricity: " << totalElectricityBill << " lv\n";
    cout << "Water: " << totalWaterBill << " lv\n";
    cout << "Internet: " << totalInternetBill << " lv\n";
    cout << "Other: " << totalOtherBills << " lv\n";
    cout << "Average: " << average << " lv\n";

    return 0;
}