Kyuuhachi

import java.io.*;
import java.util.LinkedList;
import java.util.List;

public class Hard162 {
	
	public static void main(String[] args) {
		if(args.length < 3) err("<Error: too few arguments>");
		if(args.length > 3) err("<Error: too many arguments>");
		if(!args[0].equals("-d") && !args[0].equals("-c")) err("<Error: unknown operation>");