Submission

Score: 100

User: punzacp555

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-02 21:04:47

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

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    
    vector<long long> dp(n);
    dp[0] = dp[1] = 1;

    for(int i=2; i<n; i++) {
        dp[i] = dp[i-1] + dp[i-2];
    }

    cout << dp[n-1];   

    return 0;
}