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?

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.

Constraints

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

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.

见题面 Input 部分

见题面 Output 部分