Submission #13,113

2025-01-06 16:35:35

cpp17

Accepted 40/40

1ms

508 KiB

#include <iostream>
using namespace std;
long long a[29];
int main()
{
    int n; cin>>n;
    long long a[29];
    a[0]=0; a[1]=1; a[2]=2; a[3]=5;
    long long s;
    for(int i=4; i<=28; i++){
        s=2+a[i-1]+a[i-2];
        for(int j=1; j<i-2; j++){s+=2*a[j];}
        a[i]=s;}
    cout<<a[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	316 KiB
		7	Accepted	2/2	1ms	316 KiB
		8	Accepted	3/3	1ms	316 KiB
		9	Accepted	3/3	1ms	508 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