Submission

Score: 100

User: Jajxr_

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-13 18:28:06

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