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.
a, b = map(int, input().split())
x = (a+b)/2
print(int(x//1)+1)
a, b = map(int, input().split())
x = (a+b)/2
if x%1==0:
    print(int(x))
else:
    print(int(x)+1)