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 (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
#include <math.h>
 int main()
{
       int i,j;
       float c;
       scanf("%d%d",&i,&j);
       c=(i+j)/2;
       if(i%2==0&&j%2!=0||i%2!=0&&j%2==0){printf("%.f",round(c)+1);}
       else if(i%2==0&&j%2==0){
       printf("%.f",round(c));}
       else if(i%2!=0&&j%2!=0){printf("%.f",round(c));}
       return 0;
}