def max_subset_sum(a1, a2):
n = len(a1)
if n == 0:
return 0
dp = [0] * n
dp[0] = max(a1[0], a2[0], 0)
if n == 1:
return dp[0]
dp[1] = max(dp[0], a1[1], a2[1])
for i in range(2, n):
dp[i] = max(dp[i - 1], max(a1[i], a2[i]) + dp[i - 2])
return dp[n - 1]
a1 = [1, 5, 3, 21234]
a2 = [-4509, 200, 3, 40]
print(max_subset_sum(a1, a2))
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