Submission

Score: 50

User: jamesz

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-29 20:23:24

#include<iostream>
using namespace std;
int main(){
	int a,h1,h2;
	cin>>a;
	h1 = 1; h2 = 1;
	if(a == h1 || a == h2){
		cout<<1;
		return 0;
	}
	for(int i = 0; i<a-2; i++){
		int t = h2;
		h2 = h2+h1;
		h1 = t;
		
	}
	cout<<h2;
	
}