Submission #13,813

2025-01-08 19:59:48

cpp17

Accepted 40/40

1ms

508 KiB

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

int main()
{
    int n; cin>>n;
    vector<array<int, 3>> dp(n+1);
    dp[0][0]=1;
    dp[1][0]=1;
    for(int i=2; i<=n; i++)
    {
        dp[i][0]+=dp[i-1][0];
        dp[i][0]+=dp[i-2][0];
        dp[i][0]+=dp[i-1][1];
        dp[i][0]+=dp[i-1][2];
        dp[i][1]+=dp[i-2][0];
        dp[i][1]+=dp[i-1][2];
        dp[i][2]+=dp[i-2][0];
        dp[i][2]+=dp[i-1][1];
    }
    cout<<dp[n][0]<<"\n";

}

	Sum	Test	Verdict		Time	Memory
base	40/40
		1	Accepted	0/0	1ms	316 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	2/2	1ms	316 KiB
		4	Accepted	2/2	1ms	316 KiB
		5	Accepted	2/2	1ms	316 KiB
		6	Accepted	2/2	1ms	332 KiB
		7	Accepted	2/2	1ms	316 KiB
		8	Accepted	3/3	1ms	316 KiB
		9	Accepted	3/3	1ms	316 KiB
		10	Accepted	3/3	1ms	316 KiB
		11	Accepted	3/3	1ms	316 KiB
		12	Accepted	3/3	1ms	508 KiB
		13	Accepted	3/3	1ms	316 KiB
		14	Accepted	3/3	1ms	316 KiB
		15	Accepted	3/3	1ms	500 KiB
		16	Accepted	3/3	1ms	316 KiB
		17	Accepted	3/3	1ms	316 KiB