N, = map(int, input().split())
X = list(map(int, input().split()))
Y = list(map(int, input().split()))
X.sort()
Y.sort()
X=X[::-1]
R = 0
for i in range(N):
    x,y=X[i],Y[i]
    if x>y:
        R+=x-y
print(R)