Submission #12,192

2024-12-07 16:33:26

cpp17

Accepted 40/40

1ms

592 KiB

#include <iostream>
#include <vector>

using namespace std;

int n,i;
vector<int>a;
vector<int>b;

int main()
{
    cin>>n;

    a.resize(n+1);
    b.resize(n+1);

    a[1]=1;
    a[2]=2;
    b[1]=0;
    b[2]=1;

    for(i=3;i<=n;++i)
    {
        a[i]=a[i-1]+a[i-2]+2*b[i-1];
        b[i]=a[i-2]+b[i-1];
    }

    cout<<a[n];

    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	40/40
		1	Accepted	0/0	1ms	500 KiB
		2	Accepted	0/0	1ms	320 KiB
		3	Accepted	2/2	1ms	320 KiB
		4	Accepted	2/2	1ms	320 KiB
		5	Accepted	2/2	1ms	320 KiB
		6	Accepted	2/2	1ms	320 KiB
		7	Accepted	2/2	1ms	320 KiB
		8	Accepted	3/3	1ms	320 KiB
		9	Accepted	3/3	1ms	320 KiB
		10	Accepted	3/3	1ms	320 KiB
		11	Accepted	3/3	1ms	320 KiB
		12	Accepted	3/3	1ms	320 KiB
		13	Accepted	3/3	1ms	320 KiB
		14	Accepted	3/3	1ms	336 KiB
		15	Accepted	3/3	1ms	320 KiB
		16	Accepted	3/3	1ms	320 KiB
		17	Accepted	3/3	1ms	592 KiB