import java.util.*;
public class Test {
    public static void hello(Collection x) {
        System.out.println("Collection");
    }
    public static void main(String[] args) {
        Test t = new Testing();
        List x = null;
        t.hello(x);
    }
}

import java.util.*;
class Testing extends Test {
    public static void hello(List x) {
        System.out.println("List");
    }
}

public static void hello(Collection x) {