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: Wrong Answer)

#include<stdio.h>
#include<string.h>
int ch(char *a,int s)
{
    int i,j,k,n=0;
    for(i=0;i<s;i++)
    {
        if(*(a+i)==52)
            n++;
    }
    return n;
}
int main()
{
    int i,j,k,t;
    scanf("%d",&t);
    getchar();
    while(t--)
    {
        char *n;
        char a[100];
        scanf("%s",a);
        j=strlen(a);
        printf("%d\n",ch(&a[0],j));

    }
    return 0;
}