/* 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
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String[] listA = {"10.1", "20.1", "30.1"};
		String [] listB = {"10.2", "20.2", "30.2"};
		for (int i = 0; i < listA.length; i++) {
			System.out.println(listA[i]);
			System.out.println(listB[i]);
		}
	}
}

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