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 <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>

char max(char *a){
	char max = 0x0030;
	for (int i = 0; i < strlen(a); ++i)
	{
		if(max < a[i])	max = a[i];
	}
	return max;
}

int main(int argc, char const *argv[])
{
	char s[100],t[100];
	char ch_s,ch_t;
	scanf("%s%s",s,t);
	ch_s = max(s);	ch_t = max(t);
	if(ch_s < ch_t)	printf("Yes\n");
	else printf("No\n");
}