A - Discount Fare

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Time limit : 2sec / Memory limit : 1024MB

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≤X,Y≤100
• Y is an even number.
• All values in input are integers.

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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.

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Sample Input 1

Copy

81 58

Sample Output 1

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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.

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Sample Input 2

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4 54

Sample Output 2

Copy

31

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <vector>
#include <queue>
#include <stack>
#include <cstdlib>
#include <iomanip>
#include <cmath>
#include <cassert>
#include <ctime>
#include <cstdlib>
#include <map>
#include <set>
using namespace std;
#pragma comment(linker, "/stck:1024000000,1024000000")
#define lowbit(x) (x&(-x))
#define max(x,y) (x>=y?x:y)
#define min(x,y) (x<=y?x:y)
#define MAX 100000000000000000
#define MOD 1000000007
#define pi acos(-1.0)
#define ei exp(1)
#define PI 3.1415926535897932384626433832
#define ios() ios::sync_with_stdio(true)
#define INF 1044266558
#define mem(a) (memset(a,0,sizeof(a)))
int main()
{
    int x,y;
    cin>>x>>y;
    cout<<x+y/2<<endl;
    return 0;
}