N = int(input())
A = list(map(int,input().split()))
B = list(map(int,input().split()))
ans = -sum(B)
C = [A[i] + B[i] for i in range(2 * N)]
C.sort()
for i in range(2 * N):
  if i % 2 == 0:
    ans += C[i]
print(ans)