Submission #19,146

19146

2025-11-26 15:53:18

pypy3

Accepted 80/80

70ms

29420 KiB

# UUID: 3fa89c44-ba80-427f-953f-e1d1cd22fa77
MOD = 20210108

n = int(input())

dp = [0] * (n + 2)
dp[0] = 1
dp[1] = 3

for i in range(2, n + 1):
    dp[i] = (3 * dp[i - 1] + dp[i - 2]) % MOD

print(dp[n])

	Sum	Test	Verdict		Time	Memory
base	80/80
		1	Accepted	0/0	43ms	19392 KiB
		2	Accepted	0/0	52ms	21424 KiB
		3	Accepted	4/4	39ms	19356 KiB
		4	Accepted	4/4	39ms	19408 KiB
		5	Accepted	5/5	46ms	19424 KiB
		6	Accepted	5/5	45ms	19240 KiB
		7	Accepted	6/6	63ms	29420 KiB
		8	Accepted	6/6	48ms	22492 KiB
		9	Accepted	7/7	46ms	19308 KiB
		10	Accepted	7/7	46ms	19404 KiB
		11	Accepted	8/8	50ms	23144 KiB
		12	Accepted	8/8	59ms	29212 KiB
		13	Accepted	8/8	70ms	28392 KiB
		14	Accepted	8/8	52ms	24092 KiB
		15	Accepted	2/2	43ms	19340 KiB
		16	Accepted	2/2	39ms	19388 KiB