Submission

Score: 100

User: thanakorn

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-18 19:30:09

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

int main(){
	int n;
	long long ans=1,k=1,j=1;
	cin>>n;
	for(int i=1;i<n;i++){
		ans=k;
		k+=j;
		j=ans;
	}
	cout<<ans;
}