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 C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <bits/stdc++.h>
using namespace std;

int main() {
	int s1s2s3 , s1 , s2 , s3;
	cin >> s1s2s3 >> s1 >> s2 >> s3;
		s1 = s1s2s3 / 100;
		s2 = ( s1s2s3 - s1 * 100 ) /10;
		s3 = s1s2s3 - s1 * 100 - s2 * 10;
  		cout << s1 + s2 + s3 << endl;
}