#include <iostream>
#include <cmath>
#include <vector>
#include <map>
#include <set>
#include <string>

using namespace std;

struct Vrchol
{
	double val;
	//vrcholid  castka
	map<int,double> sousedi;
	Vrchol():val(-1){}
};

Vrchol* vrcholy;

bool f(int v,double val)
{
//cout << "jdu na "<<v<<" s val="<<val<<"   ";
	if(vrcholy[v].val!=-1)
	{
//cout << "porovnat s " << vrcholy[v].val << endl;
		if(val>vrcholy[v].val+(1e-10))
			return true; // arb
		return false;
	}
	else
	{
//cout << "pokracuju" << endl;
		vrcholy[v].val = val;
		for(map<int,double>::iterator it = vrcholy[v].sousedi.begin() ; it != vrcholy[v].sousedi.end() ; it++ )
		{
			int v2 = it->first;
			double k = it->second;
			double nval = val*k;
			bool r = f(v2,nval);
			if(r)
				return true; // arb
		}
		vrcholy[v].val = -1;
//cout << "zpet z "<<v<<endl;
	}
	return false;
}

int main()
{
while(1)
{
	int men;
	cin >> men;
	if(men==0)
		break;
	map<string,int> subst;
	for(int i = 0 ; i<men ; i++)
	{
		string mena;
		cin>>mena;
		subst.insert(make_pair<string,int>(mena,i));
	}
	vrcholy = new Vrchol[men];
	int kurzu;
	cin >> kurzu;
	for(int i = 0 ; i<kurzu;i++)
	{
		string mena1,mena2;
		int k1,k2;
		cin>>mena1>>mena2>>k1;
		cin.get();
		cin>>k2;
		int m1 = subst[mena1];
		int m2 = subst[mena2];
		double kk = ((double)k2)/k1;
		vrcholy[m1].sousedi.insert(make_pair<int,double>(m2,kk));
	}
	for(int i=0;i<men;i++)
	{
		if(f(i,1))
		{
			cout << "Arbitrage" << endl;
			goto zvoneckonec;
		}
	}	
	cout << "Ok" << endl;
zvoneckonec:
	;
	delete [] vrcholy;
}
return 0;
}