import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int[]x = new int[N];
		for(int i = 0; i < N; i++) {
			x[i] = scan.nextInt();
		}
		scan.close();
		Arrays.sort(x);
		int sum = x[N - 1];
		for(int i = 0; i < N - 1; i++) {
			sum += x[i] / 2;
		}
		System.out.println(sum);
	}
}