import java.rmi.*;
import java.rmi.server.*;
public class CalculatorImpl extends UnicastRemoteObject implements Calculator{
	public CalculatorImpl() throws RemoteException{
		super();
	}
	public long add(long a,long b) throws RemoteException{
		return a + b;
	}
	public long sub(long a,long b) throws RemoteException{
		return a - b;
	}
	public long mul(long a,long b) throws RemoteException{
		return a * b;
	}
	public long div(long a,long b) throws RemoteException{
		return a / b;
	}
}