Submission

Score: 50

User: Ricon

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-07 06:38:28

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

int main() {
    int n;
    cin >> n;
    vector<int> ans(n+1);

    for (int i = 0; i <= n; i++) {
        if (i == 0) ans[i] = 0;
        if (i == 1) ans[i] = 1;
        else if (i > 1) ans[i] = ans[i-1] + ans[i-2];
    }

    cout << ans[n];

    return 0;
}