Submission #22,961

2026-01-16 09:49:50

cpp17

Accepted 50/50

13ms

8176 KiB

#include <iostream>

using namespace std;

int main()
{
    unsigned long long N;
    cin >> N;

    unsigned long long M[N+1];
    M[0]=1;
    M[1]=2;
    M[2]=4;

    for (unsigned long long i=3; i<=N; i++)
    {
        M[i]=(2*(M[i-1]+M[i-3]))%20210108;
    }

    cout << M[N];

    return 0;
}

	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	316 KiB
		7	Accepted	4/4	13ms	8176 KiB
		8	Accepted	4/4	2ms	1332 KiB
		9	Accepted	4/4	1ms	316 KiB
		10	Accepted	4/4	1ms	316 KiB
		11	Accepted	4/4	3ms	1964 KiB
		12	Accepted	4/4	13ms	7940 KiB
		13	Accepted	4/4	9ms	7232 KiB
		14	Accepted	4/4	4ms	2868 KiB
		15	Accepted	2/2	1ms	316 KiB
		16	Accepted	2/2	1ms	316 KiB