Submission #23,019

2026-01-16 10:46:45

cpp17

Accepted 50/50

13ms

8048 KiB

#include <iostream>
#include <vector>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    vector<unsigned long long int> m(n+1);
    m[0] = 1;
    m[1] = 2;
    m[2] = 4;
    for (int i = 3; i <= n; ++i)
    {
        m[i] = 2 * (m[i - 1] + m[i - 3]) % 20210108;
    }
    cout << m[n];

}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	508 KiB
		2	Accepted	0/0	1ms	508 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	316 KiB
		7	Accepted	4/4	12ms	8048 KiB
		8	Accepted	4/4	2ms	1332 KiB
		9	Accepted	4/4	1ms	508 KiB
		10	Accepted	4/4	1ms	560 KiB
		11	Accepted	4/4	3ms	1844 KiB
		12	Accepted	4/4	13ms	7996 KiB
		13	Accepted	4/4	12ms	7220 KiB
		14	Accepted	4/4	4ms	2868 KiB
		15	Accepted	2/2	1ms	316 KiB
		16	Accepted	2/2	1ms	500 KiB