x,y=list(map(int,input().split()))

print((x+y//2))
import sys

input=sys.stdin.readline



x,y=list(map(int,input().split()))

print((x+y//2))
x, y = list(map(int, input().split()))
print((x + y // 2))

import sys

input = sys.stdin.readline
x, y = list(map(int, input().split()))
print((x + y // 2))

+import sys + +input = sys.stdin.readline