import java.util.ArrayList;

class Box extends Item {

    private String type;
    private ArrayList<Item> contents;
    private int emptyWeight;

    public Box(String type) {
        this.type = type;
        if (type.equals("wooden")) {
            this.emptyWeight = 10;
        } else {
            this.emptyWeight = 1;
        }
        contents = new ArrayList<Item>();
    }

    public int getWeight() {
        int total = this.emptyWeight;
        for (Item thing : contents) {
            total += thing.getWeight();
        }
        return total;
    }

    public void pack(Item x) {
        contents.add(x);
    }

    public boolean isPerishable() {
        for (Item thing : contents) {
            if (thing.isPerishable()) {
                return true;
            }
        }
        return false;
    }

    public String toString() {
        String p = "";
        if (isPerishable()) {
            p = " perishable";
        }
        return "A " + contents.size() + "-item " + type + p + " box";
    }
}