Score : $200$ points
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 is given from Standard Input in the following format:
$N$ $p_1$ $p_2$ $:$ $p_N$
Print the total amount Mr. Takaha will pay.
3 4980 7980 6980
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.
4 4320 4320 4320 4320
Only one of the four items gets the discount and the total is $4320 / 2 + 4320 + 4320 + 4320 = 15120$ yen.