/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	int x,y,sum;
 
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Ideone ideOne = new Ideone();
		Ideone.InnerClass ic = ideOne.new InnerClass();
		ic.printSum(5,4);
	}
 
 
	private class InnerClass {
	    private void printSum(int x,int y) {
	        Ideone.this.x=x;
	        Ideone.this.y=y;
	        Ideone.this.sum = x + y;
	        System.out.println(Ideone.this.sum);
	    }
	}
}