#include <iostream>
#include <map>
#include <string>

using namespace std;

int parse_acctnum(string tmp){
	int acctnum = 0;

	for(string::iterator it = tmp.begin(); it != tmp.end(); it++){
		if(*it == '/')
			continue;
		acctnum *= 10;
		acctnum += (*it - '0');
	}

	return acctnum;
}

int parse_amount(string tmp){
	int amount = 0;;

	for(string::iterator it = tmp.begin(); it != tmp.end(); it++){
		if(*it == '.')
			continue;
		amount *= 10;
		amount += (*it - '0');
	}

	return amount;
}

void format_amount(int a){
	cout << ' ' << (a/100) << "." << ((a%100)/10) << (a%10);
}

int main(void)
{
	map<int, int> account;
	int naccts, acctnum, amount;
	string tmp;

	while(true){
	
		cin >> naccts;
		if(naccts <= 0)
			break;

		for(int i=0; i<naccts; i++){
			cin >> tmp;

			acctnum = parse_acctnum(tmp);

			cin >> tmp;
			amount = parse_amount(tmp);
			
			//cout << "ucet: " << acctnum << " " << amount << endl;
			//account[acctnum] = amount;
			account.insert(make_pair(acctnum, amount)); 
		}
		/*
		for(map<int,int>::iterator it = account.begin(); it != account.end(); it++){
			cout << it->first << " " << it->second << endl;
		}
		break;
		*/

		while(true){
			cin >> tmp;
			if(tmp == "end"){
				cout << "end\n\n";
				break;
			}
			cout << tmp;
			if(tmp == "create"){
				cin >> tmp;

				acctnum = 0;
				for(string::iterator it = tmp.begin(); it != tmp.end(); it++){
					if(*it == '/')
						continue;
					acctnum *= 10;
					acctnum += (*it - '0');
				}
				//existuje?
				if(account.count(acctnum) > 0){
					cout << ": already exists\n";
					continue;
				}

				account.insert(make_pair(acctnum, 0));
				cout << ": ok\n";

			}else if(tmp == "deposit"){
				cin >> tmp;
				int acctnum = parse_acctnum(tmp);
				cin >> tmp;
				int amount = parse_amount(tmp);
				format_amount(amount);

				if(account.count(acctnum) == 0){
					cout << ": no such account\n";
					continue;
				}

				account[acctnum] = account[acctnum] + amount;
				cout << ": ok\n";

			}else if(tmp == "withdraw"){
				cin >> tmp;
				int acctnum = parse_acctnum(tmp);
				cin >> tmp;
				int amount = parse_amount(tmp);
				format_amount(amount);

				if(account.count(acctnum) == 0){
					cout << ": no such account\n";
					continue;
				}

				if(account[acctnum] < amount){
					cout << ": insufficient funds\n";
					continue;
				}
				account[acctnum] -= amount;
				cout << ": ok\n";

			}else if(tmp == "transfer"){
				cin >> tmp;
				int acctnum_from = parse_acctnum(tmp);
				cin >> tmp;
				int acctnum_to = parse_acctnum(tmp);
				cin >> tmp;
				int amount = parse_amount(tmp);
				format_amount(amount);

				if(account.count(acctnum_from) == 0){
					cout << ": no such account\n";
					continue;
				}
				if(account.count(acctnum_to) == 0){
					cout << ": no such account\n";
					continue;
				}
				if(acctnum_from == acctnum_to){
					cout << ": same account\n";
					continue;
				}
				if(account[acctnum_from] < amount){
					cout << ": insufficient funds\n";
					continue;
				}

				if(acctnum_from % 10 == acctnum_to % 10){
					cout << ": ok\n";
				}else{
					cout << ": interbank\n";
				}
				account[acctnum_from] -= amount;
				account[acctnum_to] += amount;
			
			}else{
				cerr << "wtf: " << tmp << endl;;
				exit(1);
			}

		}

		//vymazat mapu
		account.erase(account.begin(), account.end());
	}

	cout << "goodbye\n";

	return 0;
}