N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

ans = 0
used = [False]*(2*N)
for i in range(N*2):
    if i%2 == 0:
        MAX = max(B[j] for j in range(N*2) if not used[j])
        idx = -1
        M = 0
        for j in range(N*2):
            if not used[j] and B[j] == MAX and M < A[j]:
                M = A[j]
                idx = j
        used[idx] = True
        ans -= B[idx]
    else:
        MAX = max(A[j] for j in range(N*2) if not used[j])
        idx = -1
        M = 0
        for j in range(N*2):
            if not used[j] and A[j] == MAX and M < B[j]:
                M = B[j]
                idx = j
        used[idx] = True
        ans += A[idx]

print(ans)