Submission #20,766

2026-01-08 19:34:01

python3

Runtime error 36/40

17ms

3252 KiB


n = int(input())
sol = [0] * (n + 1)
sol[1] = 1
sol[2] = 2
sol[3] = 5
for i in range(4, n+1):
    sol[i] = 2*sol[i-1] + sol[i-3]
print(sol[n])

	Sum	Test	Verdict		Time	Memory
base	36/40
		1	Accepted	0/0	16ms	2868 KiB
		2	Accepted	0/0	16ms	2868 KiB
		3	Runtime error	0/2	17ms	2868 KiB
		4	Runtime error	0/2	16ms	2864 KiB
		5	Accepted	2/2	14ms	3044 KiB
		6	Accepted	2/2	14ms	2884 KiB
		7	Accepted	2/2	14ms	3064 KiB
		8	Accepted	3/3	16ms	2868 KiB
		9	Accepted	3/3	16ms	2868 KiB
		10	Accepted	3/3	16ms	3088 KiB
		11	Accepted	3/3	16ms	3056 KiB
		12	Accepted	3/3	16ms	3252 KiB
		13	Accepted	3/3	16ms	2892 KiB
		14	Accepted	3/3	16ms	2884 KiB
		15	Accepted	3/3	17ms	2868 KiB
		16	Accepted	3/3	16ms	3076 KiB
		17	Accepted	3/3	14ms	3072 KiB