Print Grandson's Name

                            Print Grandson's Name

The program must accept first and last names of three persons who are in a family tree and print the grandson's name.

Input Format:
The first line contains the first and last name of person 1 separated by a space.
The second line contains the first and last name of person 2 separated by a space.
 The third line contains the first and last name of person 3 separated by a space.

Output Format:
The first line contains the first and last name of the grandson separated by a space.

Boundary Conditions:
Length of first and last names are from 3 to 100

Note:
The last name of a person is nothing but the father's first name.

Example Input/Output 1:

Input:
Arun Kumar
Swamy Nathan
Kumar Swamy

Output:
Arun Kumar


Code:
import java.util.*;
public class Hello {

    public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int i,j;
String[] son=new String[3];
String[] father=new String[3];
for(i=0;i<3;i++)
   {
       son[i]=sc.next();
       father[i]=sc.next();
   }
   int flag=0;
 for(i=0;i<3;i++)
 {
     for(j=0;j<3;j++)
       {
        if(!son[i].equals(father[j]))
           {
               flag++;
           }
         
        }
       if(flag==3)
           break;
                 else
                    flag=0;
   }
           System.out.println(son[i]+" "+father[i]);
}
}