import java.util.ArrayList;
import java.util.List;

interface Chewable {}
class Meat implements Chewable {}


public class Tester {

	public static List<? extends Chewable> printSize(List<? extends Chewable> list) { // Line 10
		System.out.println(list.size());
		return list;
	}
	public static void main(String[] args) {
		
		List<? extends Chewable> list1 = new ArrayList<Meat>(); // Line 16
		List<Chewable> list2 = new ArrayList<Chewable>(); // Line 17
		List<Meat> list3 = new ArrayList<Meat>(); // Line 18
		
		list1 = printSize(list1); // Line 20
		list2 = printSize(list2); // Line 21
		list3 = printSize(list3); // Line 22
		
	}
}