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)

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

int main(void) {
	char s[101], t[101];
	int i, j, sl, tl;
	scanf("%s", s);
	sl = strlen(s);
	scanf("%s", t);
	tl = strlen(t);

	for (i = 0; i < sl - 1; i++) {
		for (j = i + 1; j < sl; j++) {
			if (s[i] > s[j]) {
				char tmp;
				tmp = s[i];
				s[i] = s[j];
				s[j] = tmp;
				
			}
		}
		printf("%s\n", s);
	}
	for (i = 0; i < tl - 1; i++) {
		for (j = i + 1; j < tl; j++) {
			if (t[i] > t[j]) {
				char tmp;
				tmp = t[i];
				t[i] = t[j];
				t[j] = tmp;
			}
		}
	}
	for (i = 0; i < tl - 1; i++) {
		for (j = i + 1; j < tl; j++) {
			if (t[i] < t[j]) {
				char tmp;
				tmp = t[i];
				t[i] = t[j];
				t[j] = tmp;
			}
		}
		printf("%s\n", t);
	}

	if(strcmp(s, t)>0){
		printf("Yes");
	}
	else {
		printf("No");
	}

	return 0;
}