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

int main(void)
{
	char line[1024];
	int accounts;
	int acc[2000][2];
	int suma[2000][2];
	int x, y;
	int x2, y2;
	int xx, yy;
	int n;
	int found, found2, i, j;

	while (1)
	{
		fgets(line, sizeof(line), stdin);
		line[strlen(line)-1] = '\0';

		accounts = atoi(line);
		if (accounts == 0)
			break;

		memset(acc, 0, sizeof(acc));
					
		n = 0;
		while (1)
		{
			fgets(line, sizeof(line), stdin);
			line[strlen(line)-1] = '\0';
			if (!strcmp(line, "end"))
				break;
			if (!strncmp(line, "create", strlen("create")))
			{
				sscanf(line, "create %d/%d", &x, &y);
				
				found = 0;
				for (i = 0; i < n; i++)
				{
					if (acc[i][0] == x && acc[i][1] == y)
					{
						found = 1;
						break;
					}
				}
				if (found)
					printf("create: already exists\n");
				else
					{
						printf("create: ok\n");	
						acc[n][0] = x;
						acc[n][1] = y;
						suma[n][0] = 0;
						suma[n][1] = 0;
						n++;
					}
			}
			else if (!strncmp(line, "withdraw", strlen("withdraw")))
			{
				sscanf(line, "withdraw %d/%d %d.%d", &x, &y, &xx, &yy);
				
				found = 0;
				for (i = 0; i < n; i++)
				{
					if (acc[i][0] == x && acc[i][1] == y)
					{
						found = 1;
						break;
					}
				}
				if (!found)
					printf("withdraw %d.%02d: no such account\n", xx, yy);
				else
					{
						if (suma[i][0] < xx || (suma[i][0] == xx && suma[i][1] < yy))
							printf("withdraw %d.%02d: insufficient funds\n", xx, yy);
						else {
							printf("withdraw %d.%02d: ok\n", xx, yy);
							suma[i][0] -= xx;
							suma[i][1] -= yy;
							if (suma[i][1] < 0)
								{
									suma[i][1] += 100;
									suma[i][0] -= 1;
								}
						}
					}
			}
			else if (!strncmp(line, "deposit", strlen("deposit")))
			{
				sscanf(line, "deposit %d/%d %d.%d", &x, &y, &xx, &yy);
				
				found = 0;
				for (i = 0; i < n; i++)
				{
					if (acc[i][0] == x && acc[i][1] == y)
					{
						found = 1;
						break;
					}
				}
				if (!found)
					printf("deposit %d.%02d: no such account\n", xx , yy);
				else
					{
						printf("deposit %d.%02d: ok\n", xx, yy);
						suma[i][0] += xx;
						suma[i][1] += yy;
						if (suma[i][1] >= 100)
						{
							suma[i][1] -= 100;
							suma[i][0] += 1;
						}
					}
			}
			else if (!strncmp(line, "transfer", strlen("transfer")))
			{
				sscanf(line, "transfer %d/%d %d/%d %d.%d", &x, &y, &x2, &y2, &xx, &yy);
				
				found = 0;
				for (i = 0; i < n; i++)
				{
					if (acc[i][0] == x && acc[i][1] == y)
					{
						found = 1;
						break;
					}
				}
				found2 = 0;
				for (j = 0; j < n; j++)
				{
					if (acc[j][0] == x2 && acc[j][1] == y2)
					{
						found2 = 1;
						break;
					}
				}
				if (!found || !found2)
					printf("transfer %d.%02d: no such account\n", xx, yy);
				else
					{
						if (i == j)
						{
							printf("transfer %d.%02d: same account\n", xx, yy);
						}
						else
						{
							if (suma[i][0] < xx || (suma[i][0] == xx && suma[i][1] < yy))
								printf("transfer %d.%02d: insufficient funds\n", xx, yy);
							else {
								if (acc[i][1] == acc[j][1])
									printf("transfer %d.%02d: ok\n", xx, yy);
								else
									printf("transfer %d.%02d: interbank\n", xx, yy);
								suma[i][0] -= xx;
								suma[i][1] -= yy;
								suma[j][0] += xx;
								suma[j][1] += yy;
								if (suma[i][1] < 0)
									{
										suma[i][1] += 100;
										suma[i][0] -= 1;
									}
								if (suma[j][1] >= 100)
									{
										suma[j][1] -= 100;
										suma[j][0] += 1;
									}
							}

						}
					}
			}
			else {
				sscanf(line, "%d/%d %d.%d", &x, &y, &xx, &yy);
				acc[n][0] = x;
				acc[n][1] = y;
				suma[n][0] = xx;
				suma[n][1] = yy;
				n++;
			}
		}
		fgets(line, sizeof(line), stdin);
		printf("end\n\n");
	}
	printf("goodbye\n");
	return 0;
}