package other;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

public class bin_1

{

    public static void main(String[] args) throws IOException

    {

        Ackerman myAckerman=new Ackerman(10, 2);

    }

}

class Ackerman

{

    int  m;

    int  n;

    int result;

    public Ackerman(int n,int  m) throws IOException

    {

        this.n=n;

        this.m=m;

        result=ackerman(n,m);

        display();

    }

    public int ackerman(int n,int m)

    {

        if(n==1&&m==0)

        {

            return 2;

        }

        if(n==0&&m>=0)

        {

            return 1;

        }

        if(n>=2&&m==0)

        {

            return n+2;

        }

        return ackerman(ackerman(n-1,m),m-1);

    }

    public void display() throws IOException

    {

        BufferedWriter fout=new BufferedWriter(new FileWriter("out.txt"));

        fout.write("result="+result);

    	fout.flush();

    }

}

		Ackerman myAckerman=new Ackerman(10, 2);