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)

import math

def makelist(n, m):
    return [[0 for _ in range(m)] for _ in range(n)]

# n = int(input())
# a, b = list(map(int, input().split()))
# s = input()

a, b = list(map(int, input().split()))
ans = math.ceil(a / b)
print(ans)