Submission #380

2021-11-03 08:18:14

cpp11

Accepted 50/50

12ms

9444 KiB

#include <iostream>
#include <vector>

using namespace std;

int main()
{
	cin.sync_with_stdio(false);
	cin.tie(NULL);

	int n;
	cin >> n;

	vector<int> b(n + 1);

	b[1] = 2;
	b[2] = 4;
	b[3] = 10;

	if (n < 4) {
		cout << b[n] << endl;
		return 0;
	}

	for (int i = 4; i <= n; i++) {
		b[i] = (2 * b[i - 1] + 2 * b[i - 3]) % 20210108;
	}

	cout << b[n] << endl;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	2ms	1756 KiB
		2	Accepted	0/0	1ms	1788 KiB
		3	Accepted	3/3	1ms	1840 KiB
		4	Accepted	3/3	1ms	1840 KiB
		5	Accepted	4/4	1ms	1840 KiB
		6	Accepted	4/4	1ms	1836 KiB
		7	Accepted	4/4	12ms	9440 KiB
		8	Accepted	4/4	3ms	2684 KiB
		9	Accepted	4/4	1ms	1840 KiB
		10	Accepted	4/4	1ms	1840 KiB
		11	Accepted	4/4	3ms	3200 KiB
		12	Accepted	4/4	12ms	9444 KiB
		13	Accepted	4/4	9ms	8532 KiB
		14	Accepted	4/4	4ms	4240 KiB
		15	Accepted	2/2	1ms	1840 KiB
		16	Accepted	2/2	1ms	1840 KiB