Submission

Score: 100

User: faofao

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2026-08-16 20:13:50

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

int main(){
    ios::sync_with_stdio(),cin.tie(0);
    ll n;cin>>n;
    ll arr[100];
    arr[1]=1;
    arr[2]=1;
    for(ll i=3;i<=n;i++) arr[i]=arr[i-1]+arr[i-2];
    cout << arr[n];
}