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

long accttonr(int a1, int a2) { 
	if ((a1 * 10) + a2 > 99999) return 0;
	return (a1 * 10) + a2;
}

int main() {
	int accts[100005];
	float bal[100005];
	int a;
	int a1, a2;
	int c1, c2;
	float b;
	char action[15];

	long long run = 0;
	for (int i = 0; i < 100005; i++) { accts[i] = 0; }

	while (1) {
		run++;
		scanf("%d", &a);
		if (a == 0) { 
			printf("goodbye\n");

			return 0;
		}

		for (int i = 0; i < a; i++) {
			scanf("%d/%d %f", &a1, &a2, &b);
			accts[accttonr(a1, a2)] = run;
			bal[accttonr(a1, a2)] = b;
		}

		while (1) {
			scanf("%s", action);
			if (strcmp(action, "end") == 0) {
				printf("end\n\n");
				break;
			}
			if (strcmp(action, "deposit") == 0) {
				scanf("%d/%d %f", &a1, &a2, &b);
				if (accts[accttonr(a1, a2)] == run) {
					bal[accttonr(a1, a2)] += b;
					printf("deposit %.2f: ok\n", b);
				} else {
					printf("deposit %.2f: no such account\n", b);
				}
			
			}
			if (strcmp(action, "withdraw") == 0) {
				scanf("%d/%d %f", &a1, &a2, &b);
				if (accts[accttonr(a1, a2)] == run) {
					if (bal[accttonr(a1, a2)] >= b) {
						bal[accttonr(a1, a2)] -= b;
						printf("withdraw %.2f: ok\n", b);
					} else {
						printf("withdraw %.2f: insufficient funds\n", b);

					}
				} else {
					printf("withdraw %.2f: no such account\n", b);
				}
			}
			if (strcmp(action, "transfer") == 0) {
				scanf("%d/%d %d/%d %f", &a1, &a2, &c1, &c2, &b);
				if ((accts[accttonr(a1, a2)] == run) && (accts[accttonr(c1, c2)] == run)) {
					if ((a1 == c1) && (a2 == c2)) {
						printf("transfer %.2f: same account\n", b);
					} else if (bal[accttonr(a1, a2)] >= b) {
						bal[accttonr(a1, a2)] -= b;
						bal[accttonr(c1, c2)] += b;
						if (a2 == c2) {
							printf("transfer %.2f: ok\n", b);
						} else {
							printf("transfer %.2f: interbank\n", b);

						}
					} else {
						printf("transfer %.2f: insufficient funds\n", b);

					}
				} else {
					printf("transfer %.2f: no such account\n", b);
				}
			}
			if (strcmp(action, "create") == 0) {
				scanf("%d/%d", &a1, &a2);
				if (accts[accttonr(a1, a2)] == run) {
					printf("create: already exists\n");
				} else {
					printf("create: ok\n");
					accts[accttonr(a1, a2)] = run;
					bal[accttonr(a1, a2)] = 0;
				}
			}


		}


	}
	return 0;
}