Submission

Score: 0

User: Gundhon

Problemset: อนุกรม

Language: cpp

Time: 1.091 second

Submitted On: 2026-10-01 21:34:50

#include <bits/stdc++.h>

using namespace std;
int fibonacci(int n){
    if (n <= 1) return n;
    else{
        return fibonacci(n-1) + fibonacci(n-2); // fibonacci formula
    }
}

int main(){
    vector<int> f;
    int n;
    cin >> n;
    
    cout << fibonacci(n-1);

    return 0;
}