class BCDNumber {
	private boolean bit0, bit1, bit2, bit3;

	public BCDNumber(boolean bit3, boolean bit2, boolean bit1, boolean bit0) {
		this.bit0 = bit0; this.bit1 = bit1; this.bit2 = bit2; this.bit3 = bit3;
	}

	public boolean getBit0() { return bit0;}
	public boolean getBit1() { return bit1; }
	public boolean getBit2() { return bit2; }
	public boolean getBit3() { return bit3; }
}

interface DecimalNumber {
	public int getInt();
}

class MyInteger implements DecimalNumber {
	private int num;
	
	public MyInteger(int num) {
		this.num = num;
	}

	public int getInt() {
		return num;
	}	
}

class BCDAdapter implements DecimalNumber {
	private BCDNumber num;
	
	public BCDAdapter(BCDNumber num) {
		this.num = num;
	}
	
	public int getInt() {
		return (num.getBit0()?1:0) + 2*(num.getBit1()?1:0) + 4 * (num.getBit2()?1:0) + 8 * (num.getBit3() ? 1:0);
	}
}

public class DecimalDriver {
	public static int addDecimalNumbers(DecimalNumber num, DecimalNumber num2) {
		return num.getInt() + num2.getInt();
	}

	public static void main(String[] args) {
		BCDNumber num = new BCDNumber(true, false, false, false);
		BCDAdapter adapter = new BCDAdapter(num);
		MyInteger num2 = new MyInteger(5);
		int result = addDecimalNumbers(adapter, num2);
		System.out.println("Result: " + result);
	}		
}