#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstdlib>
#include<iomanip>
#include<cstring>
#include<string>
#include<cmath>
#include<vector>
#include<queue>
#include<deque>
#include<set>
#include<map>
#include<utility>
#include<stack>

using namespace std;

    int currencies;
    map<string, int> curcodes;
    long double rates[200];
    vector<vector<pair<int,double> > > hrany;
    int farby[200];
    int farba=1;

int prehladaj(int kde){
    int q=0;
    for (int i=0;i<hrany[kde].size() && q==0;i++){
//	cout<<setprecision(10)<<rates[hrany[kde][i].first]<<" "<<rates[kde]*hrany[kde][i].second<<" ..\n";
	if (farby[hrany[kde][i].first]==0 || farby[hrany[kde][i].first]==farba){
	    if (rates[hrany[kde][i].first]==0){
//		cout<<"hladam"<<endl;
		rates[hrany[kde][i].first]=rates[kde]*hrany[kde][i].second;
		farby[hrany[kde][i].first]=farba;
		q+=prehladaj(hrany[kde][i].first);
	    } else {
//		   cout<<setprecision(10)<<rates[hrany[kde][i].first]<<" "<<rates[kde]*hrany[kde][i].second<<" ..\n";
		if (rates[kde]*hrany[kde][i].second-rates[hrany[kde][i].first]>0.000000000000001) {
//		    cout<<"nehladam"<<endl;
		    q=1;
		}
	    }
	}
    }
//    cout<<kde<<" "<<q<<endl;
    return q;
}

int main(){
    int cas=0;
    while (true)
    {
    cas++;
    bool lala=1;
    cin >> currencies;
    if (currencies == 0)
        break;
    for (int i = 0; i < currencies; i++)
    {
	string t;
	cin >> t;
	curcodes[t] = i;
    }
    for (int i = 0; i < currencies; i++)
    {
		rates[i] = 0;
		farby[i]=0;
    }
    int ratescount;
    cin >> ratescount;
    hrany.clear();
    hrany.resize(currencies);
    for (int i = 0; i < ratescount; i++)
    {
	string from, to;
	cin >> from >> to;
	long double fromr, tor;
	scanf("%Lf:%Lf", &fromr, &tor);
	hrany[curcodes[from]].push_back(make_pair(curcodes[to],tor/fromr));
    }
/*    for (int i=0;i<hrany.size();i++){
	for (int j=0;j<hrany[i].size();j++){
	    cout<<hrany[i][j].first<<" "<<hrany[i][j].second<<"; ";
	}
	cout<<endl;
    }*/
    for (int i=0;i<currencies && lala;i++){
	if (farby[i]==0){
	    farba++;
	    rates[i]=1;
	    farby[i]=farba;
	    if(prehladaj(i)){
		cout<<"Arbitrage\n";
		lala=0;
	    }
	}
    }
/*    for (int i = 0; i<ratescount;i++){
	for (int j=0;j<ratescount;j++){
	    if (rates[hrany[j].first.second]<rates[hrany[j].first.first]*hrany[j].second)
		rates[hrany[j].first.second]=rates[hrany[j].first.first]*hrany[j].second;
	}
    }
    for (int i=0;i<ratescount && lala;i++){
	if (rates[hrany[i].first.second]<rates[hrany[i].first.first]*hrany[i].second){
	    cout<<"Arbitrage\n";
	    lala=0;
	}
    }*/
    if(lala) cout<<"Ok\n";

}

    return 0;
}