Submission

Score: 100

User: Tjeez

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-28 20:49:26

#include <iostream>
using namespace std;
using ll=long long;
int main(){
	ios::sync_with_stdio ; cout.tie(0); cin.tie(0);
	ll arr[100]={0};
	arr[0]=1;arr[1]=1;
	for (ll i=2 ;i<100 ; i++){
		arr[i]=arr[i-1]+arr[i-2];
	}
	ll n;
	cin>>n;
	cout<<arr[n-1];
}