Problem:
Score : 100 points

Problem Statement

You are given two positive integers a and b.
Let x be the average of a and b.
Print x rounded up to the nearest integer.

Constraints

a and b are integers.

1 \leq a, b \leq 100

Input

Input is given from Standard Input in the following format:

a b

Output

Print x rounded up to the nearest integer.

Sample Input 1

1 3

Sample Output 1

2

The average of 1 and 3 is 2.0, and it will be rounded up to the nearest integer, 2.

Sample Input 2

7 4

Sample Output 2

6

The average of 7 and 4 is 5.5, and it will be rounded up to the nearest integer, 6.

Sample Input 3

5 5

Sample Output 3

5

Solution in Julia (0.5.0) (judge verdict: Accepted)

function get_data_from_stdin()
	return Base.parse.( Base.split( Base.readline( Base.STDIN ) ) )
end

function abc082_a()

	# STEP.01
	# get the target positive numbers
	a, b = get_data_from_stdin()

	# STEP.02
	# output the result
	Base.println( Base.STDOUT, Base.div(a+b+1, 2) )

	# STEP.TRUE_END
	return Base.nothing

end

#==================================================================================================#

Main.abc082_a()