#include <iostream>
#include <string>
#include <vector>
#include <cstdlib>

using namespace std;

struct ucet{
	string cisloUctu;
	char kodBanky;
	int zustatek;
};

float round(float f) {
	int i = (int)(f * 1000);
	int m = i%10;
	i = i-m;
	if (m >= 5) { return (float) (i+10) / 1000;}
	return (float) i / 1000;
}


float toF(int x) {
	return ((float) x) / 100;
}

int toI(float x) {
	int a = (int) (round(x * 100));
	return a;
}



ucet* findUcet(vector<ucet>& ucty, string& number) {
	for (unsigned i = 0; i<ucty.size(); i++) {
		if (ucty[i].cisloUctu == number) {
			return &ucty[i];
		}
	}
	
	return NULL;
}

void create(vector<ucet>& ucty){
	string cisloUctu;
	cin >> cisloUctu;
	
	if (findUcet(ucty,cisloUctu)) {
		cout << "create: already exists" << endl;
		return;
	}
	
	ucet u;
	u.cisloUctu = cisloUctu;
	u.kodBanky = u.cisloUctu[u.cisloUctu.length()-1];
	u.zustatek = 0;
	ucty.push_back(u);
	cout << "create: ok" << endl;	
}

void deposit(vector<ucet>& ucty) {
	string cisloUctu;
	cin >> cisloUctu;
	float pF;
	cin >> pF;
	int p = toI(pF);
	
	ucet * u = findUcet(ucty, cisloUctu);
	if (u) {
		u->zustatek += p;	
		cout << "deposit ";
		printf("%.2f",toF(p));
		cout << ": ok" << endl; 
		return;
	}

	cout << "deposit ";
	printf("%.2f",toF(p));
	cout << ": no such account" << endl;
}


void withdraw(vector<ucet>& ucty){
	string cisloUctu;
	cin >> cisloUctu;
	float pF;
	cin >> pF;
	int p = toI(pF);
	ucet * u = findUcet(ucty, cisloUctu);
	if (u) {
		if(p <= u -> zustatek){
			u->zustatek -= p;		
			cout << "withdraw ";
			printf("%.2f",toF(p));
			cout << ": ok" << endl; 
		}else{
			cout << "withdraw ";
			printf("%.2f",toF(p));
			cout << ": insufficient funds" << endl; 
		}
		return;
	}
	cout << "withdraw ";
	printf("%.2f",toF(p));
	cout << ": no such account" << endl; 
}

void transfer(vector<ucet>& ucty){
	string src, dest;
	cin >> src;
	cin >> dest;
	ucet *srcUcet = NULL;
	ucet *destUcet = NULL;
	float pF;
	cin >> pF;
	int p = toI(pF);
	srcUcet = findUcet(ucty,src);
		destUcet = findUcet(ucty,dest);
		if(!srcUcet || !destUcet){
			cout << "transfer ";
			printf("%.2f",toF(p));
			cout << ": no such account" << endl;
			return;
		} 
	if(src == dest){
		cout << "transfer ";
		printf("%.2f",toF(p));
		cout << ": same account" << endl;
	} else {
	
		
		if(srcUcet->zustatek < p){
			cout << "transfer ";
			printf("%.2f",toF(p));
			cout << ": insufficient funds" << endl;
			return;
		}
		srcUcet->zustatek -= p;
		
		destUcet->zustatek += p;
		
		if(srcUcet->kodBanky == destUcet->kodBanky){
			cout << "transfer ";
			printf("%.2f",toF(p));
			cout << ": ok" << endl;
		}else{
			cout << "transfer ";
			printf("%.2f",toF(p));
			cout << ": interbank" << endl;
		}
		
	}
}


int main () {
	while(true){
		// nacitani uctu
		int pocetUctu;
		
		string operace;
		vector<ucet> ucty;
		// nacteni uctu
		cin >> pocetUctu;
		if( pocetUctu == 0 ){	
		  break;
		}
		for(int i = 0; i < pocetUctu; i++){
			ucet u;
			cin >> u.cisloUctu;
			u.kodBanky = u.cisloUctu[u.cisloUctu.length()-1];
			float p;
			cin >> p;
			u.zustatek = toI(p);
			ucty.push_back(u);
		}
		
		// operace
		
		while(true){
			cin >> operace;
			
			if(operace == "end") break;
			if(operace == "create"){
				create(ucty);
			}else if(operace == "deposit"){
				deposit(ucty);
			}else if(operace == "withdraw"){
				withdraw(ucty);
			}else if(operace == "transfer"){
				transfer(ucty);
			}
			
			/*cout << "zustatek ";
			printf("%0.2f",toF(ucty[0].zustatek));
			cout << endl;*/
		}
		
		cout << "end" << endl;
		cout << endl;
	
	}	
	
	cout << "goodbye" << endl;

	return 0;
}