import java.util.*;
import java.lang.*;
 
class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
        ArrayList<Integer> foo = new ArrayList<Integer>();
        foo.add(1); foo.add(2); foo.add(3);
        Iterator<Integer> it = foo.iterator();
        System.out.println(it.hasNext());
        System.out.println(it.hasNext());
        System.out.println(it.hasNext());
        System.out.println(it.hasNext());
        System.out.println(it.hasNext());
        System.out.println(it.hasNext());
	}
}

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