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

using namespace std;

int main()
{
	map <string, double> acc;
	int i, j, n;
	char an[500], line[500];
	string anstr, anstr2;
	double bal;
	while (1)
	{
		acc.clear();
		scanf("%d", &n);
		if (!n) break;
		for (i = 0; i < n; i++)
		{
			scanf("%s %lf", an, &bal);
			anstr = string(an);
			acc[anstr] = bal;
		}
		fgets(line, 400, stdin);
		while (strncmp(line, "end", 3) != 0)
		{
			if (strncmp(line, "create", 6) == 0)
			{
				anstr = string(line + 7, 6);
				if (acc.count(anstr) > 0)
					printf("create: already exists\n");
				else
				{
					acc[anstr] = 0;
					//printf("%s\n", anstr.c_str());
					printf("create: ok\n");
				}
			}
			else if (strncmp(line, "deposit", 7) == 0)
			{
				//printf("here\n");
				anstr = string(line + 8, 6);
				sscanf(line + 14, "%lf", &bal);
				printf("deposit %.2lf: ", bal);
				if (acc.count(anstr) > 0)
				{
					acc[anstr] += bal;
					printf("ok\n");
				}
				else
					printf("no such account\n");
			}
			else if (strncmp(line, "withdraw", 8) == 0)
			{
				anstr = string(line + 9, 6);
				sscanf(line + 15, "%lf", &bal);
				printf("withdraw %.2lf: ", bal);
				if (acc.count(anstr) > 0)
				{
					if (acc[anstr] >= bal)
					{
						acc[anstr] -= bal;
						printf("ok\n");
					}
					else
					{
						printf("insufficient funds\n");
					}
				}
				else
					printf("no such account\n");

			}
			else if (strncmp(line, "transfer", 8) == 0)
			{
				anstr = string(line + 9, 6);
				anstr2 = string(line + 16, 6);
				//printf("%s:%s\n", anstr.c_str(), anstr2.c_str());
				sscanf(line + 22, "%lf", &bal);
				printf("transfer %.2lf: ", bal);
				if (acc.count(anstr) <= 0 || acc.count(anstr2) <= 0)
					printf("no such account\n");
				else if (anstr.compare(anstr2) == 0)
					printf("same account\n");
				else 
				{
					if (acc[anstr] >= bal)
					{
						acc[anstr] -= bal;
						acc[anstr2] += bal;
						if (anstr[5] != anstr2[5])
							printf("interbank\n");
						else
							printf("ok\n");
					}
					else
					{
						printf("insufficient funds\n");
					}
				}
	
			}
			fgets(line, 400, stdin);
		}
		printf("end\n\n");
	}
	printf("goodbye\n");

	return 0;
}