Submission #3,750

2023-03-02 18:36:51

cpp17

Accepted 50/50

13ms

11220 KiB

#include <bits/stdc++.h>
using namespace std;

const int mod = 20210108;

void solve(){
    int n;
    cin>>n;
    vector<int> dp(n+1, 0);
    dp[0]=0;
    dp[1]=2;
    dp[2]=4;
    dp[3]=10;
    for(int i=4; i<=n; i++){
        dp[i]=(dp[i-1]*2+dp[i-3]*2)%mod;
    }
    cout<<dp[n]%mod;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    solve();
    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	3ms	1828 KiB
		2	Accepted	0/0	2ms	2060 KiB
		3	Accepted	3/3	2ms	2136 KiB
		4	Accepted	3/3	2ms	2208 KiB
		5	Accepted	4/4	2ms	2428 KiB
		6	Accepted	4/4	2ms	2420 KiB
		7	Accepted	4/4	13ms	10260 KiB
		8	Accepted	4/4	4ms	3584 KiB
		9	Accepted	4/4	2ms	2848 KiB
		10	Accepted	4/4	2ms	2980 KiB
		11	Accepted	4/4	4ms	4652 KiB
		12	Accepted	4/4	12ms	11220 KiB
		13	Accepted	4/4	12ms	10280 KiB
		14	Accepted	4/4	6ms	6072 KiB
		15	Accepted	2/2	2ms	3696 KiB
		16	Accepted	2/2	3ms	3924 KiB