#include <iostream>
#include <iomanip>
#include <vector>
#include <map>
#include <string>
#include <stdio.h>

using namespace std;

class Account{
public:
	int id;
	float ammount;
	Account(int _id, float _ammount)
		:id(_id), ammount(_ammount)
	{}
};

class Bank{
public:
	std::map<int, Account>	accounts;
	int id;
	Bank(int _id):id(_id){}
};


int main(){
	int accounts;
	int id, bankid;
	float balance;
	std::map<int, Bank> banks;	
		

	cin >> accounts;
	while(accounts--){
		scanf("%d/%d %f", &id, &bankid, &balance);
//		cout << id << " ... " << bankid << " = " << balance << "\n";
		std::map<int, Bank>::iterator bit= banks.find(bankid);	
		if(bit == banks.end()){
			banks.insert(std::pair<int, Bank>(bankid, Bank(bankid)));
			bit= banks.find(bankid);
			bit->second.accounts.insert(std::pair<int, Account>(id, Account(id, balance)));
		}else{
			bit->second.accounts.insert(std::pair<int, Account>(id, Account(id, balance)));
		}
	}
//	for(map<int, Bank>::iterator bit= banks.begin(); bit != banks.end(); bit++)
//		for(map<int, Account>::iterator it= bit->second.accounts.begin(); it != bit->second.accounts.end(); it++)
//			cou	t << it->second.id << " " << it->second.ammount << "\n";
		
	while(1){
	while(1){
		string str;
		cin >> str;
		if(str == "create"){
			scanf("%d/%d", &id, &bankid);
			cout << str << ": ";
			std::map<int, Bank>::iterator bit= banks.find(bankid);
			std::map<int, Account>::iterator it = bit->second.accounts.find(id);
			if(it != bit->second.accounts.end()){
				cout << "already exists\n";
			}else{
				bit->second.accounts.insert(std::pair<int, Account>(id, Account(id, 0)));
				cout << "ok\n";
			}
		}else
		if(str == "deposit"){
			scanf("%d/%d %f", &id, &bankid, &balance);
			cout << str; printf(" %0.2f: ", balance);
			std::map<int, Bank>::iterator bit= banks.find(bankid);
			std::map<int, Account>::iterator it = bit->second.accounts.find(id);
			if(it != bit->second.accounts.end()){
				it->second.ammount += balance;
				cout << "ok\n";
			}else{
				cout << "no such account\n";
			}
		}else
		if(str == "withdraw"){
			scanf("%d/%d %f", &id, &bankid, &balance);
			cout << str;  printf(" %0.2f: ", balance);
			std::map<int, Bank>::iterator bit= banks.find(bankid);
			std::map<int, Account>::iterator it = bit->second.accounts.find(id);
			if(it != bit->second.accounts.end()){
				if(it->second.ammount >= balance){
					it->second.ammount -= balance;
				cout << "ok\n";	
				}else{
					cout << "insufficient funds\n";
				}	
			}else{
				cout << "no such account\n";
			}
		}else
		if(str == "transfer"){
			int id2, bankid2;
			scanf("%d/%d %d/%d %f", &id, &bankid, &id2, &bankid2, &balance);
			cout << str; printf(" %0.2f: ", balance);
			if(bankid == bankid2 && id == id2)
				cout << "same account\n";
			else{
				std::map<int, Bank>::iterator bit= banks.find(bankid);
				std::map<int, Account>::iterator it = bit->second.accounts.find(id);
				if(it != bit->second.accounts.end()){
					std::map<int, Bank>::iterator bit2= banks.find(bankid);
					std::map<int, Account>::iterator it2 = bit2->second.accounts.find(id);
					if(it2 != bit2->second.accounts.end()){
						
						if(it->second.ammount >= balance){
							it->second.ammount -= balance;
							it2->second.ammount += balance;
							if(bit == bit2)
								cout << "interbank\n";
							else
								cout << "ok\n";	
						}else{
							cout << "insufficient funds\n";
						}

						
					}else{
						cout << "no such account\n";
					}
				}else{
					cout << "no such account\n";
				}
			}
		}else
		if(str == "end"){
			cout << str << "\n\n";
		}else
		if(str == ""){
			break;
		}else 
		if(str == "0"){
			cout << "goodbye\n";		
			return 0;
		}
	}
	banks.clear();
	if(cin.eof())
		break;
	}
	
	cout << "goodbye\n";
	return 0;
}