import java.util.*;
import java.io.*;

public class banking{

	public static void main(String[] args) throws IOException{

		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		

		String line = null;
		banking b = new banking();
		boolean countSet = false;
		while((line = reader.readLine())!=null){
			if(!countSet){
				int count = Integer.parseInt(line);
				if(count==0){
					System.out.println("goodbye");
					break;
				}
				for(int i=0;i<count;i++){
					line = reader.readLine();
					StringTokenizer t = new StringTokenizer(line);
					String number = (String)t.nextElement();
					double balance = Double.parseDouble((String)t.nextElement());
					b.create(number, balance, false);
				}
				countSet = true;
			}

			if(line.startsWith("withdraw")){
				StringTokenizer t = new StringTokenizer(line);
				t.nextElement();
				String number = (String)t.nextElement();
				double balance = Double.parseDouble((String)t.nextElement());
				b.withdraw(number, balance);
			}

			if(line.startsWith("create")){
				StringTokenizer t = new StringTokenizer(line);
				t.nextElement();
				String number = (String)t.nextElement();
				//double balance = Double.parseDouble((String)t.nextElement());
				b.create(number, 0, true);
			}
			if(line.startsWith("deposit")){
				StringTokenizer t = new StringTokenizer(line);
				t.nextElement();
				String number = (String)t.nextElement();
				double balance = Double.parseDouble((String)t.nextElement());
				b.deposit(number, balance);
			}
			if(line.startsWith("transfer")){
				StringTokenizer t = new StringTokenizer(line);
				t.nextElement();
				String source = (String)t.nextElement();
				String dest = (String)t.nextElement();
				double balance = Double.parseDouble((String)t.nextElement());
				b.transfer(source, dest, balance);
			}

			if(line.equals("end")){
				System.out.println("end");
				System.out.println("");
				b = new banking();
				countSet = false;
				reader.readLine();
			}
		}
	}

	ArrayList<Account> accounts = new ArrayList<Account>();
	public banking(){
		
	}
	public String addZero(double number){
		String text = number+"";
		StringTokenizer t = new StringTokenizer(text, ".");
		String pred = (String)t.nextElement();
		String za = (String)t.nextElement();
		if(za.length()==1){
			za += "0";
		}
		return pred+"."+za;
	}
	public String getBankNumber(String number){
		StringTokenizer t = new StringTokenizer(number, "/");
		t.nextElement();
		String elem = (String)t.nextElement();
		return elem;
	}
	public void transfer(String source, String dest, double balance){
		if(source.equals(dest)){
			System.out.println("transfer "+addZero(balance)+": same account");
			return;
		}

		Account sourceAccount = findAccount(source);
		Account destAccount = findAccount(dest);
		
		if(sourceAccount!=null && destAccount!=null){
			if(sourceAccount.balance>=balance){
				sourceAccount.balance -= balance;
				destAccount.balance += balance;
				
				String sourceBank = getBankNumber(sourceAccount.number);
				String destBank = getBankNumber(destAccount.number);
				if(sourceBank.equals(destBank)){
					System.out.println("transfer "+addZero(balance)+": ok");
				} else {
					System.out.println("transfer "+addZero(balance)+": interbank");
				}
			} else {
				System.out.println("transfer "+addZero(balance)+": insufficient funds");
			}
		} else {
			System.out.println("transfer "+addZero(balance)+": no such account");
		}
	}
	public void withdraw(String number, double balance){
		Account a = null;
		if((a = findAccount(number))!=null){
			if(a.balance>=balance){
				a.balance -= balance;
				System.out.println("withdraw "+addZero(balance)+": ok");
			} else {
				System.out.println("withdraw "+addZero(balance)+": insufficient funds");
			}
		} else {
			System.out.println("withdraw "+addZero(balance)+": no such account");
		}
	}
	public void deposit(String number, double balance){
		Account a = null;
		if((a = findAccount(number))!=null){
			a.balance += balance;
			System.out.println("deposit "+addZero(balance)+": ok");
		} else {
			System.out.println("deposit "+addZero(balance)+": no such account");
		}
	}
	public void create(String number, double balance, boolean showMessage){
		StringTokenizer t = new StringTokenizer(number, "/");
		int n = Integer.parseInt((String)t.nextElement());
		int b = Integer.parseInt((String)t.nextElement());

		number = n+"/"+b;

		if(findAccount(number)==null){
			Account newAccount = new Account();
			newAccount.number = number;
			newAccount.balance = balance;
			accounts.add(newAccount);
			if(showMessage){
				System.out.println("create: ok");
			}
		} else {
if(showMessage){
			System.out.println("create: already exists");
}
		}
	}
	public Account findAccount(String number){
		for(int i=0;i<accounts.size();i++){
			if(number.equals(accounts.get(i).number)){
				return accounts.get(i);
			}
		}
		return null;
	}

	public class Account{
		public String number;
		public double balance;	
	}
}