/*
 *      arbitrage.C
 *      
 *      Copyright 2010 Contest team 23 <cteam23@pc-7-32>
 */


#include <iostream>
#include <string>
#include <sstream>

using namespace std;

string meny[200];
float kurzy[200];


inline int findInArray(string &str, int count){
	for (int i = 0; i < count; i++){
		if (str.compare(meny[i]) == 0) return i;
	}
}

inline int strToInt(string str){
	istringstream iss(str);

	int out;	
	iss >> out;
	return out;
}

int main(int argc, char** argv)
{
	char line[256];
	int count, pairs;
	string a,b;
	string kurz;
	int aPos, bPos;
	int pos;
	int kurzA, kurzB;
	
	while(1){
		fgets(line, sizeof(line), stdin);		
		sscanf(line, "%d", &count);
		
		if (count == 0) break;
		
		for (int i = 0; i < count; i++){
			kurzy[i] = 0;
		}
		
		fgets(line, sizeof(line), stdin);
		istringstream iss(line);
		
		for (int i = 0; i < count; i++){
				//sscanf(line, "%s", &meny[i]);
				iss >> meny[i];
		}
		
		fgets(line, sizeof(line), stdin);		
		sscanf(line, "%d", &pairs);
		
		bool ok = true;
		
		for (int i = 0; i < pairs; i++){
				
				fgets(line, sizeof(line), stdin);
				istringstream iss(line);			
				
				iss >> a;
				iss >> b;
				
				iss >> kurz;
				
				aPos = findInArray(a, count);
				bPos = findInArray(b, count);
				
				//pozice dvojtecky
				pos = kurz.find(":");
				
				kurzA = strToInt(kurz.substr(0,pos));
				kurzB = strToInt(kurz.substr(pos + 1, kurz.size() - pos +1));
				
				//cout << aPos << " " << bPos << endl;
				
				if (kurzy[aPos] == 0) kurzy[aPos] = 1;
				
				float tmp = kurzy[aPos] / kurzA * kurzB;
				
				//cout << kurzy[aPos] << " " << kurzy[bPos] << endl;
				
				if (kurzy[bPos] == 0) kurzy[bPos] = tmp;
				else if (kurzy[bPos] < tmp) {
					ok = false;
					break;					
				}
				//cout << kurzy[aPos] << " " << kurzy[bPos] << endl << endl;
				
		}
		
		if (ok) printf("Ok\n");
		else printf("Arbitrage\n");
		
	}
	
	return 0;
}