Submission #21,346

2026-01-12 19:09:32

pypy3

Accepted 40/40

46ms

19620 KiB

# UUID: cab62841-e21c-4bf6-88c1-d125a7849be1
N = int(input())
n=29
a = [0] * n
b = [0] * n
  
a[0] = 1
a[1] = 1
a[2] = 2
b[0] = 0
b[1] = 0
b[2] = 1

for i in range(3, n):
    a[i] = a[i-1] + a[i-2] + 2*b[i-1]
    b[i] = a[i-2] + b[i-1]

print(a[N])

	Sum	Test	Verdict		Time	Memory
base	40/40
		1	Accepted	0/0	39ms	19432 KiB
		2	Accepted	0/0	39ms	19432 KiB
		3	Accepted	2/2	43ms	19620 KiB
		4	Accepted	2/2	45ms	19392 KiB
		5	Accepted	2/2	39ms	19404 KiB
		6	Accepted	2/2	37ms	19436 KiB
		7	Accepted	2/2	43ms	19420 KiB
		8	Accepted	3/3	43ms	19500 KiB
		9	Accepted	3/3	39ms	19432 KiB
		10	Accepted	3/3	39ms	19528 KiB
		11	Accepted	3/3	43ms	19524 KiB
		12	Accepted	3/3	45ms	19380 KiB
		13	Accepted	3/3	39ms	19492 KiB
		14	Accepted	3/3	45ms	19456 KiB
		15	Accepted	3/3	46ms	19316 KiB
		16	Accepted	3/3	39ms	19504 KiB
		17	Accepted	3/3	39ms	19312 KiB