运行以下C++程序并输入9，输出结果为：

#include <iostream>
using namespace std;
int a[15];
int main(){
    int n;
    cin >> n;
    a[1] = a[2] = 1;
    for(int i = 3; i <= n; i++){
        a[i] = a[i-1] + a[i-2];
    }
    cout << a[n];
    return 0;
}