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: Accepted)

# Problem https://atcoder.jp/contests/abc082/tasks/abc082_a
# Python 1st Try


def orginalCeil(a, b):
    c = (a + b + 1) // 2
    return c


if __name__ == "__main__":
    a, b = map(int, input().split(' '))
    answer = orginalCeil(a, b)
    print(answer)
exit