Submission

Score: 100

User: Bermmmm

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-07 14:16:32

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

int main() {
    long long arr[120],n;

    arr[0] = 1;
    arr[1] = 1;
    for (int i=2;i<120;i++) {
        arr[i] = arr[i-1] + arr[i-2];
    }

    cin >> n;
    if (n == 0) {
        cout << '1';
        return 0;
    }
    else if (n == 1) {
        cout << '1';
        return 0;
    }
    else {
        cout << arr[n-1];
    }
}