Problem Statement

In some other world, today is the day before Christmas Eve.

Mr. Takaha is buying $N$ items at a department store. The regular price of the $i$-th item $(1 \\leq i \\leq N)$ is $p_i$ yen (the currency of Japan).

He has a discount coupon, and can buy one item with the highest price for half the regular price. The remaining $N-1$ items cost their regular prices. What is the total amount he will pay?

Constraints

• $2 \\leq N \\leq 10$
• $100 \\leq p_i \\leq 10000$
• $p_i$ is an even number.

Input

Input is given from Standard Input in the following format:

$N$ $p_1$ $p_2$ $:$ $p_N$

Output

Print the total amount Mr. Takaha will pay.

Sample Input 1

3
4980
7980
6980

Sample Output 1

15950

The $7980$-yen item gets the discount and the total is $4980 + 7980 / 2 + 6980 = 15950$ yen.

Note that outputs such as 15950.0 will be judged as Wrong Answer.

Sample Input 2

4
4320
4320
4320
4320

Sample Output 2

15120

Only one of the four items gets the discount and the total is $4320 / 2 + 4320 + 4320 + 4320 = 15120$ yen.