$(15$ points$)$ A men$$s clothing store advertises that if you buy a suit, you can get a second suit at halfoff. What they mean is that if you buy two suits, then the price of the lower$-$cost suit is reduced by

$50\%.$ Write a program that accepts the two costs as input and then calculates the total cost after

halving the cost of the lowest price suit.

Example of results:

Enter cost of first suit: $378\mathrm{.}50$

Enter cost of second suit: $495\mathrm{.}99$

Cost of the two suits is $$685\mathrm{.}24$