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 Python (3.4.3) (judge verdict: Wrong Answer)

li =input().split()
a= int(li[0])
b= int(li[1])

#if a==0 or b==0:
	#c=inta+b
	#print('a')

if a==0 or b==0 or a % 2 !=0 or b % 2 != 0:
	c =int(((a+b)/2) + 1)
	#print('b')

else:
	c=int((a+b)/2)
	#print('c')
    
print(c)