int fibonacci(int n) {
    if (n <= 1) {
        return n;
    }
    return fibonacci(n - 1) + fibonacci(n - 2);
}

int fibonacciIterative(int n) {
    int first = 0;
    int second = 1;
    for (int i = 0; i < n; i = i + 1) {
        int next = first + second;
        first = second;
        second = next;
    }
    return first;
}

int main() {
    int n = 10;
    print(fibonacci(n));
    print(fibonacciIterative(n));
    return 0;
}