Submission

Score: 50

User: Neozaawwman1

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-06 21:41:54

#include <bits/stdc++.h>
using namespace std;
int main(){
	int n, sum, x=1, c=1; cin>>n;
	if(n>90){
		return 0;
	}
	for(int i=3; i<=n; i++){
		sum=c+x;
		x=c;
		c=sum;
		
	}
	cout<<sum;
}