Submission #19,646

19646

2025-12-17 17:13:57

cpp17

Accepted 40/40

1ms

396 KiB

#include <iostream>
using namespace std;
int main()
{
    long long int n, a=1;
    cin >> n;
    long long int t[29];
    t[1]=1;
    t[2]=2;
    for(int i=3; i<=n; i++)
    {
        t[i]=t[i-1]+t[i-2]+2*a;
        a+=t[i-2];
    }
    cout << t[n];
    return 0;
}

	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	396 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	316 KiB
		13	Accepted	3/3	1ms	316 KiB
		14	Accepted	3/3	1ms	316 KiB
		15	Accepted	3/3	1ms	316 KiB
		16	Accepted	3/3	1ms	316 KiB
		17	Accepted	3/3	1ms	316 KiB