已知如下C++代码片段：

#include <iostream>
using namespace std;
int main() {
    int arr[2][3] = {{10, 20, 30}, {40, 50, 60}};
    cout << arr[1][1] << " ";
    cout << *(*(arr + 1) + 1) << " ";
    cout << *(arr[1] + 2) << endl;
    return 0;
}