Submission #19,943

19943

2025-12-30 11:31:03

cpp17

Accepted 50/50

13ms

8124 KiB

#include <iostream>

using namespace std;

long long sols[1000000];

int main()
{
	int n;
	cin >> n;
	sols[0] = 2;
	sols[1] = 4;
	sols[2] = 10;
	for (int i = 3; i < n; i++)
	{
		sols[i] = (2 * (sols[i - 3] + sols[i - 1])) % 20210108;
	}
	cout << sols[n - 1];
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	316 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	3/3	1ms	316 KiB
		4	Accepted	3/3	1ms	316 KiB
		5	Accepted	4/4	1ms	316 KiB
		6	Accepted	4/4	1ms	336 KiB
		7	Accepted	4/4	12ms	8072 KiB
		8	Accepted	4/4	2ms	1172 KiB
		9	Accepted	4/4	1ms	316 KiB
		10	Accepted	4/4	1ms	508 KiB
		11	Accepted	4/4	3ms	1844 KiB
		12	Accepted	4/4	13ms	8124 KiB
		13	Accepted	4/4	10ms	7220 KiB
		14	Accepted	4/4	4ms	2868 KiB
		15	Accepted	2/2	1ms	316 KiB
		16	Accepted	2/2	1ms	316 KiB