Submission #19,110

19110

2025-11-24 17:26:55

pypy3

Accepted 80/80

68ms

29304 KiB

# UUID: 9ba3c180-638f-4eb1-b98f-344d19a6a837
import sys
input = sys.stdin.readline

def solve():
	n = int(input())
	dp = [0] * (n+2)
	dp[1] = 1
	for i in range(2, n+2):
		dp[i] = dp[i-2] + 3 * dp[i-1]
		dp[i] %= 20210108
	print(dp[n+1])

solve()

	Sum	Test	Verdict		Time	Memory
base	80/80
		1	Accepted	0/0	43ms	19512 KiB
		2	Accepted	0/0	46ms	21356 KiB
		3	Accepted	4/4	43ms	19540 KiB
		4	Accepted	4/4	39ms	19420 KiB
		5	Accepted	5/5	45ms	19436 KiB
		6	Accepted	5/5	43ms	19432 KiB
		7	Accepted	6/6	63ms	29304 KiB
		8	Accepted	6/6	46ms	22560 KiB
		9	Accepted	7/7	45ms	19428 KiB
		10	Accepted	7/7	39ms	19368 KiB
		11	Accepted	8/8	56ms	23016 KiB
		12	Accepted	8/8	63ms	29072 KiB
		13	Accepted	8/8	68ms	28392 KiB
		14	Accepted	8/8	57ms	24248 KiB
		15	Accepted	2/2	39ms	19352 KiB
		16	Accepted	2/2	37ms	19436 KiB