Submission

Score: 100

User: Smail

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2026-04-08 21:02:25

#include <bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin>>n;
    vector<long long> x(n+1);
    x[0]=x[1]=1;
    for (int i=2;i<=n;i++) {
        x[i]=x[i-1]+x[i-2];
    }
    cout<<x[n-1];
}