import java.lang.Number;
import java.lang.Integer;
import java.lang.Double;
import java.lang.String;

public class InstanceOf {
    main(n) {
        if (n instanceof Integer i) {
            takes(i);
            return "Integer";
        } else if (n instanceof Double d) {
            takes(d);
            return "Double";
        }
    }

    takes(i) {} // Should be overloaded
}