import java.lang.Integer;
import java.util.Vector;

public class A {
	m(Integer i) { }
}

public class B extends A { }

public class C extends B {
	m(Integer i) { }
}	

public class D extends C { }



public class Inherit {
/*
	main(d, i) {
	  d.m(1);
	}
*/
	
	main(v, i) {
		var aa = v.elementAt(0);
		aa.m(1);
	}
}