/* 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 MutableArray
{
	private int[] values;
    public int[] getValues() {
        return values;
    }
 
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		MutableArray ma = new MutableArray();
        assert ma.getValues() == null;
 
        int[] arrayRef = ma.getValues();
        assert arrayRef == null;
 
        arrayRef = new int[5];
        arrayRef[0] = 42;
        assert arrayRef != null;
        assert arrayRef[0] == 42;
 
        assert ma.getValues() != null;
        assert ma.getValues()[0] == 42;
	}
}

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