56AC - ABC087C: Candies

ABC087-C (300 points)

# input
N = int(input())
A = [list(map(int, input().split())) for i in range(2)]

ans = 0

for i in range(N):
    tmp = 0
    for j in range(i + 1):
        tmp += A[0][j]
    for k in range(i, N):
        tmp += A[1][k]
    if tmp >= ans:
        ans = tmp

print(ans)