#include <iostream>
#include <map>
#include <sstream>

using namespace std;


bool exists(map<string,int> &m, string &a) {
    map<string,int>::iterator it = m.find(a);
    return it != m.end();
}

int readmoney() {
    int i,f;
    char c;
    cin >> i >> c >> f;
//    cout << i << " " << f << endl;
    return i*100+f;
}

string printmoney(int money) {
    stringstream s;
    int i = money / 100;
    int f = money % 100;
    s << i << ".";
    if (f<10) s << "0";
    s << f;
    return s.str();
}

int main() {
	string line;
	while (cin) {
		map<string,int> accounts;
		int acnt;
		cin >> acnt;
		if (acnt==0) {
		    cout << "goodbye" << endl;
		    return 0;
		}
		for (int i=0; i<acnt; i++) {
		    string name;
		    cin >> name;
		    int balance = readmoney();
		    accounts[name] = balance;
		}
		while (true) {
		    string cmd;
		    cin >> cmd;
		    if (cmd=="end") {
			cout << "end" << endl << endl;
			break;
		    }
		    string acc;
		    cin >> acc;
		    if (cmd == "create") {
			cout << "create: ";
			if (!exists(accounts,acc)) {
			    accounts[acc] = 0;
			    cout << "ok";
			} else {
			    cout << "already exists";
			}
		    }
		    if (cmd == "deposit") {
			int money = readmoney();
			cout << "deposit " << printmoney(money) << ": ";
			if (!exists(accounts, acc)) {
			    cout << "no such account";
			} else {
			    accounts[acc] = accounts[acc] + money;
			    cout << "ok";
			}
		    }
		    if (cmd == "withdraw") {
			int money = readmoney();
			cout << "withdraw " << printmoney(money) << ": ";
			if (!exists(accounts, acc)) {
			    cout << "no such account";
			} else {
			    if (accounts[acc] >= money) {
				accounts[acc] = accounts[acc] - money;
				cout << "ok";
			    } else {
				cout << "insufficient funds";
			    }
			}
			
		    }
		    if (cmd == "transfer") {
			string acc2;
			cin >> acc2;
			int money = readmoney();
			cout << "transfer " << printmoney(money) << ": ";
			if (!exists(accounts, acc) || !exists(accounts, acc2)) {
			    cout << "no such account";
			} else {
			    if (acc == acc2) {
				cout << "same account";
			    } else {
				if (accounts[acc] >= money) {
				    accounts[acc] = accounts[acc] - money;
				    accounts[acc2] = accounts[acc2] + money;
				    if (acc[acc.size()-1] == acc2[acc2.size()-1]) {
					cout << "ok";
				    } else {
					cout << "interbank";
				    }
				} else {
				    cout << "insufficient funds";
				}
			    }
			}
		    }
		    cout << endl;
		}
		
	}

	return 0;
}