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