#include <iostream>

using namespace std;

int main() {

    const int n = 5;

    double a[n];
    double sum = 0;

    cout << "Enter the array: ";
    for (int i = 0; i < n; i++) {
        cin >> a[i];

        if ((i + 1) % 2 == 0) {
            sum += a[i];
        }
    }

    cout << endl << "Original array: ";
    for (int i = 0; i < n; i++) {
        cout << a[i] << " ";
    }

    cout << "\n";

    for (int i = 0; i < n - 1; i++) {
        for (int j = 0; j < n - i - 1; j++) {
            if (a[j] < a[j + 1]) {
                double temp = a[j];
                a[j] = a[j + 1];
                a[j + 1] = temp;
            }
        }
    }

    cout << "Sorted array: ";
    for (int i = 0; i < n; i++) {
        cout << a[i] << " ";
    }

    cout << endl << "Sum of elements: " << sum << endl;


    return 0;
}