Untitled

#include <iostream>
#include <fstream>
using namespace std;
int A(int m, int n)
{
    if (m == 0) return n + 1;
    else {
        if ((m != 0) && (n == 0)) {
            return A(m - 1, 1);
        }
        else {
            if ((m > 0) && (n > 0)) {
                return A(m - 1, A(m, n - 1));
            }
        }
    }
}
int main()
{
	setlocale(LC_ALL, "Russian");
	ifstream in("input.txt");
	int n, m;
	in >> m >> n;
	cout << A(m, n);
}