#include <stdio.h>
#include <map>
#include <string>

using namespace std;

int parsepenez(char *s)
{
        int i = -1, sum = 0;
        while (s[++i] != 0)
        {
                if (s[i] < '0' || s[i] > '9') continue;
                sum *= 10;
                sum += s[i] - '0';
        }
        return sum;
}

struct ucet
{
	char cislo[10];
	int penez;
};

map<string, ucet> u;

int main()
{
	int poc;
	char cmd[50];
	scanf("%d", &poc);

	while (poc != 0)
	{
		u.clear();
		while (poc-- > 0)
		{
			ucet nu;
			char pen[10];
			scanf("%s %s", nu.cislo, pen);
			nu.penez = parsepenez(pen);
			u.insert(pair<string, ucet>(nu.cislo, nu));
		}

		scanf("%s", cmd);
		while (cmd[0] != 'e')
		{
			if (cmd[0] == 'c')
			{
				ucet nu;
				nu.penez = 0;
				scanf("%s", nu.cislo);
				pair<map<string, ucet>::iterator, bool> res = u.insert(pair<string, ucet>(nu.cislo, nu));
				if (res.second)
				{
					printf("create: ok\n");
				} else
				{
					printf("create: already exists\n");
				}
			} else if (cmd[0] == 'd')
			{
				char cislo[20], penez[20];
				scanf("%s %s", cislo, penez);
				map<string, ucet>::iterator it = u.find(cislo);
				if (it == u.end())
				{
					printf("deposit %s: no such account\n", penez);
				} else
				{
					(*it).second.penez += parsepenez(penez);
					printf("deposit %s: ok\n", penez);
				}
			} else if (cmd[0] == 'w')
			{
				char cislo[20], penez[20];
				scanf("%s %s", cislo, penez);
				map<string, ucet>::iterator it = u.find(cislo);
				if (it == u.end())
				{
					printf("withdraw %s: no such account\n", penez);
				} else
				{
					int pp = parsepenez(penez);
					if ((*it).second.penez >= pp)
					{
						(*it).second.penez -= pp;
						printf("withdraw %s: ok\n", penez);
					} else
					{
						printf("withdraw %s: insufficient funds\n", penez);
					}
				}
			} else if (cmd[0] == 't')
			{
				char uod[20], udo[20], penez[20];
				scanf("%s %s %s", uod, udo, penez);
				map<string, ucet>::iterator o = u.find(uod);
				map<string, ucet>::iterator d = u.find(udo);

				if (o == u.end() || d == u.end())
				{
					printf("transfer %s: no such account\n", penez);
				} else
				{
					if (o == d)
					{
						printf("transfer %s: same account\n", penez);
					} else
					{
						int pp = parsepenez(penez);
						if ((*o).second.penez < pp)
						{
							printf("transfer %s: insufficient funds\n", penez);
						} else
						{
							(*o).second.penez -= pp;
							(*d).second.penez += pp;
							if ((*o).second.cislo[5] == (*d).second.cislo[5])
							{
								printf("transfer %s: ok\n", penez);
							} else
							{
								printf("transfer %s: interbank\n", penez);
							}
						}
					}
				}
			}

			scanf("%s", cmd);
		}

		printf("end\n\n");
		scanf("%d", &poc);
	}
	printf("goodbye\n");

	return 0;
}