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 <iostream>
using namespace std;

int main()
{
	string s,t;
	cin>>s;
	cin>>t;
	
	char s_min='z',t_max='a',s_max='a';
	for(int i=0;i<s.size();i++){
		if (s[i]<=s_min) s_min=s[i];
		if (s[i]>=s_max) s_max=s[i];
	}
		
	for(int i=0;i<t.size();i++)
		if (t[i]>=t_max) t_max=t[i];
	if (s_min<t_max)
		cout<<"Yes"<<endl;
	else if (s_min==t_max && s_min<s_max)
		cout<<"No"<<endl;
	else if (s_min==t_max && s.size()<t.size())
		cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
	return 0;
}