Submission

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Score: 50

User: 1234

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2024-12-07 21:57:00

#include <iostream>
using namespace std;

int fibonacci(int n){
    if(n == 1|| n == 2){
        return 1;
    }
    
    int a = 1, b = 1, result;
    for (int i = 3; i<= n; i++){
        result = a + b;
        a = b;
        b = result;
    }
    return result;
}



int main(){
    int n;
    cin >> n;
    
    int result = fibonacci(n);
    cout << result;
}