def power_of_two(n,k):
    x_min = 2**k
    x_max = 2**n
    counter = 0
    
    x = x_min 
    if x == 1:
        counter = x_max
    
    else:
        while x <= x_max:
            counter += 1
            x += x_min
        
    return counter

n,k = map(int,input().split())

ans = power_of_two(n,k)

print(ans)