Submission

Score: 100

User: him

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-18 08:07:07

#include <bits/stdc++.h>
using namespace std;

int main(){
	ios::sync_with_stdio(0);cin.tie(0);
	long long int arr[1009];
	arr[1]=1;
	arr[2]=1;
	long long int a;
	cin>>a;
	for(int i=3;i<=a;i++){
		arr[i]=arr[i-1]+arr[i-2];
	}
	cout<<arr[a];
}