Problem:
Score: 100 points

Problem Statement

There is a train going from Station A to Station B that costs X yen (the currency of Japan).

Also, there is a bus going from Station B to Station C that costs Y yen.

Joisino got a special ticket. With this ticket, she can take the bus for half the fare if she travels from Station A to Station B by train and then travels from Station B to Station C by bus.

How much does it cost to travel from Station A to Station C if she uses this ticket?

Constraints

1 \leq X,Y \leq 100

Y is an even number.

All values in input are integers.

Input

Input is given from Standard Input in the following format:

X Y

Output

If it costs x yen to travel from Station A to Station C, print x.

Sample Input 1

81 58

Sample Output 1

110

The train fare is 81 yen.

The train fare is 58 ⁄ 2=29 yen with the 50% discount.

Thus, it costs 110 yen to travel from Station A to Station C.

Sample Input 2

4 54

Sample Output 2

31

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <iostream>

using namespace std;

int main()
{
    int i, N, T, A;
    cin >> N >> T >> A;
    int temp, minp, mini, delta;
    
    minp=10000*1000;
    
    int H[N];
    
    for(i=0;i<N;i++)
    {
        cin >> H[i];
    }
    
    for(i=0;i<N;i++)
    {
        temp=T*1000-H[i]*6;
        
        delta=abs(1000*A-temp);
                
        if(delta<=minp)
        {
            mini=i+1;
            minp=delta;
        }
    }
    
    cout << mini << endl;
}