/* 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 List<Integer> get(List<Integer> tt) {
		List<Integer> arr = new ArrayList<>();
		arr.add(1);arr.add(2);arr.add(3);
		tt = arr;
		return tt;
	}
 
	public static void main (String[] args) throws java.lang.Exception
	{
		List<Integer> arr = new ArrayList<>();
		arr.add(1);arr.add(2);arr.add(3);arr.add(4);
		System.out.println(arr);
		arr = get(arr);
		System.out.println(arr);
	}
}

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