#include <iostream>
Using namespace std;
Int acker (int n, int m) {
If (m == 0) {
Return n + 1;
} else if (n == 0) {
Return acker (n, m - 1) ;
} else {
Return acker (n - 1, acker (n, m - 1)) ;
}
}
Int main () {
Cout << acker (1, 2) << endl;
Return 0;
}