Submission

Score: 50

User: kkxkkx001

Problemset: อนุกรม

Language: cpp

Time: 0.005 second

Submitted On: 2026-09-30 15:00:01

#include <iostream>
using namespace std;

int main(){
	int a[89];
	a[0] = 1;
	a[1] = 1;
	int n;
	cin >> n;
	for (int i=2; i<90;i++)
	{
		a[i]=a[i-1]+a[i-2];
	}
	
	cout << a[n-1] << endl;
}