Submission

Score: 50

User: APNICHANAN

Problemset: อนุกรม

Language: cpp

Time: 0.005 second

Submitted On: 2025-09-23 23:29:08

#include <iostream>
#include <vector>
using namespace std;

int main()
{
    int n;
    vector<int> a = {1, 1};
    cin >> n;
    for (int i = 2; i < n; i++)
    {
        a.push_back(a[i - 1] + a[i - 2]);
    }
    cout << a[n - 1];
}