class animal
{
	/*zuvis, varle, roplys*/	
	int age;
	boolean sex;
}

	
class zuvis extends animal
{
	double peleko_dydis;
	
	public void print()
	{
		System.out.print(age+"   "+sex+"   ");
		System.out.println(peleko_dydis);
	}
	
	public zuvis()
	{
		age= 0;
		sex= (Math.random() > 0.5);
		peleko_dydis= (Math.random());	
		
	}
	
	public void zuvis_po_metu()
	{
		age++;	
		peleko_dydis++;
	}
		
}


class varle extends animal
{
	boolean uodega;
	
	public void print()
	{
		System.out.print(age+"   "+sex+"   ");
		System.out.println(uodega);
	}		
}

class roplys extends animal
{
	int koju_sk;
	
	public void print()
	{
		System.out.print(age+"   "+sex+"   ");
		System.out.println(koju_sk);
	}		
}