Submission #6,997

2023-12-25 09:57:02

cpp17

Accepted 50/50

12ms

10692 KiB

#include <iostream>
#include <vector>
using namespace std;
#define speed cin.tie(0); ios::sync_with_stdio(0)
const int MOD = 20210108;

int main() {
    speed;

    int N;
    cin >> N;
    vector<int> dp(N + 1);
    dp[0] = 1;

    for (int i = 1; i <= N; i++) {
        dp[i] = (long)((dp[i - 1] * 2) + (i >= 3 ? dp[i - 3] * 2 : 0)) % MOD;
    }

    cout << dp[N];
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	3ms	1828 KiB
		2	Accepted	0/0	3ms	2064 KiB
		3	Accepted	3/3	3ms	2280 KiB
		4	Accepted	3/3	3ms	2480 KiB
		5	Accepted	4/4	3ms	2580 KiB
		6	Accepted	4/4	3ms	2768 KiB
		7	Accepted	4/4	12ms	10328 KiB
		8	Accepted	4/4	4ms	3848 KiB
		9	Accepted	4/4	3ms	3044 KiB
		10	Accepted	4/4	3ms	3068 KiB
		11	Accepted	4/4	4ms	4524 KiB
		12	Accepted	4/4	12ms	10692 KiB
		13	Accepted	4/4	10ms	9904 KiB
		14	Accepted	4/4	6ms	5700 KiB
		15	Accepted	2/2	3ms	3376 KiB
		16	Accepted	2/2	3ms	3464 KiB