#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vector>

using namespace std;

typedef struct A
{
	char id[6];
	unsigned long long int money;
	//int money;
};

vector <A *> bank;

int getAccount(bool create, bool druhej)
{
	A *a;
	a = (A*)malloc(sizeof(A));
	scanf("%s", &(a->id));

	for (int i = 0; i < bank.size(); i++)
	{
		if (strcmp(bank[i]->id, a->id) == 0)
			return i;
	}

	if (create)
	{
		bank.push_back(a);
		if (druhej)
			return -1;
		else
			return bank.size() - 1;
	}
	else
		return -1;
}

int getMoney()
{
	int koruny, halire;
	scanf("%d.%d", &koruny, &halire);
	return koruny * 100 + halire;
}

void p(int m)
{
	int halire = m % 100;
	int koruny = (int)((m - halire) / 100);

	printf("%d.%02d", koruny, halire);
}


int main(void)
{
	int accounts;
	char command[20];
	scanf("%d\n", &accounts);
	while (accounts)
	{

		for (int i = 0; i < accounts; i++)
		{
			int a = getAccount(true, false);
			bank[i]->money = getMoney();
		}


		while (strcmp(command, "end") != 0)
		{
			if (strcmp(command, "withdraw") == 0)
			{
				int a = getAccount(false, false);
				int m = getMoney();

				printf("withdraw ");
				p(m);
				if (a != -1)
				{
					if (m > bank[a]->money)
					{
						printf(": insufficient funds\n");
					}
					else
					{
						bank[a]->money -= m;
						printf(": ok\n");
					}
				}
				else
				{
					printf(": no such account\n");
				}
			}
			else if (strcmp(command, "deposit") == 0)
			{
				int a = getAccount(false, false);
				int m  = getMoney();
				printf("deposit ");
				p(m);

				if (a != -1)
				{
					bank[a]->money += m;
					printf(": ok\n");
				}
				else
				{
					printf(": no such account\n");
				}
			}
			else if (strcmp(command, "transfer") == 0)
			{
				int a1 = getAccount(false, false);
				int a2 = getAccount(false, false);
				int m = getMoney();
				
				printf("transfer ");
				p(m);

				if (a1 == -1 || a2 == -1)
				{
					printf(": no such account\n");
				}
				else if (a1 == a2)
				{
					printf(": same account\n");
				}
				else
				{
					if (bank[a1]->money < m)
					{
						printf(": insufficient funds\n");
					}
					else
					{
						bank[a1]->money -= m;
						bank[a2]->money += m;

						if (bank[a1]->id[5] != bank[a2]->id[5])
						{
							printf(": interbank\n");
						}
						else
							printf(": ok\n");
					}
				}
			}
			else if (strcmp(command, "create") == 0)
			{
				int a = getAccount(true, true);
				printf("create");
				if (a == -1)
				{
					printf(": ok\n");
				}
				else
				{
					printf(": already exists\n");
				}
			}
			scanf("%s", command);
		}
		printf("end\n\n");
		scanf("%d\n", &accounts);
		memset(command, 0, 20);

		for (int i = 0; i < bank.size(); i++)
			free(bank[i]);

		bank.clear();
	}
	printf("goodbye\n");

	return 0;
}