salary

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    int N;
    cin >> N;

    double* salaries = new double[N];

    for (int i = 0; i < N; i++) {
        cin >> salaries[i];
    }

    int index;
    double bonus;
    cin >> index >> bonus;

    if (index >= 0 && index < N) {
    salaries[index] += bonus;
    } else {
        for (int i = 0; i < N; i++) {
            if (i > 0) {
                cout << " ";
            }
            cout << fixed << setprecision(2) << salaries[i];
        }
        cout << endl;
        delete[] salaries;
        return 0;
    }

    for (int i = 0; i < N; i++) {
        cout << fixed << setprecision(2) << salaries[i] << " ";
    }
    cout << endl;

    double sum = 0;
    for (int i = 0; i < N; i++) {
        sum += salaries[i];
    }
    double average = sum / N;
    cout << fixed << setprecision(2) << average << endl;

    delete[] salaries;

    return 0;
}