Blue Bridge Cup Python Group - Sequence Evaluation
a, b, c, d = 1, 1, 1, 0
for i in range(4, 20190325):
#取余10000保留后四位数，让程序跑快点
d = (a + b + c)%10000
a, b, c = b, c, d
print(a, b, c, d)
The answer is 4659
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