Submission

Score: 50

User: sulinx

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-14 20:58:30

#include <bits/stdc++.h>

#define ll long long
using namespace std;

int main(){
    int n;
    cin >> n; 
    if(n == 0 || n == 1){
        cout << n;
        return 0;
    }
    
    ll a = 0, b = 1;
    for(ll i = 2; i <= n; i++){
        int temp = a + b;
        a = b;
        b = temp;
    }
    cout << b;
}