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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>
int main(void){
  int a,b,c,i=0,ka;
  int k[100000];
  double ave[100000],min=0;
  scanf("%d",&a);
  scanf("%d%d",&b,&c);
  
  while(i<a){
      scanf("%11d",&k[i]);
      i++;
  }
  i=0;
 while(i<a){
ave[i]=c-(b-k[i]*0.006);
i++;
}
i=0;
min=ave[0];
 
while(i<a){
 if(ave[i]<=min){
     min=ave[i];
     ka=i;
 }
 i++;
}
 
printf("%d",ka+1);
return 0;
}