import java.util.*;
import java.lang.*;

public class arbitrage
{
	static ArrayList<Mena> list;
	static ArrayList<String> listNaz;
	private class Mena
	{
		int id;
		String nazev;
		ArrayList<Mena> deti = new ArrayList<Mena>();
		ArrayList<Float> detiF = new ArrayList<Float>();
	}	

	public float hledej(int id, int new_id, float pomer, Boolean ja)
	{
		if((id == new_id) && (!ja))
		{
			return pomer;
		}
		Mena men = list.get(new_id);
		for(int i = 0; i < men.deti.size(); i++)
		{
			return hledej(id, men.deti.get(i).id, pomer*men.detiF.get(i), false);
		}
		return 1;
	}

	public void nacti()
	{

		Scanner sc = new Scanner(System.in);
		mainn: while(true)
		{
			listNaz = new ArrayList<String>();
			int n = sc.nextInt();
			if(n == 0) break;
			sc.nextLine();
			
			String[] meny = new String[n];
			meny = sc.nextLine().split(" ");
			n = sc.nextInt();
			sc.nextLine();
			list = new ArrayList<Mena>();
			for(int i = 0; i < meny.length; i++)
			{
				Mena men = new Mena();
				men.nazev = meny[i];
				men.id = i;
				list.add(men);
				listNaz.add(meny[i]);
			}
			//System.out.println("size: "+list.size());
			
			for(int i = 0; i < n; i++)
			{
				String[] kurz = new String[3];
				kurz = sc.nextLine().split(" ");
				String[]  kk = kurz[2].split(":");
				
				float f = new Float(kk[0]) / new Float(kk[1]);
				//System.out.println("F: "+f);
				
				int rod = listNaz.indexOf(kurz[0]);
				Mena rodic = list.get(rod);
				
				int dit = listNaz.indexOf(kurz[1]);
				//System.out.println("dit: "+dit);
				rodic.deti.add(list.get(dit));
				rodic.detiF.add(f);
			}
			
			float k = 1;
			for(int i = 0; i < list.size(); i++)
			{
				k = hledej(i,i,1, true);
				if(k != 1) break;
			}
				if(k != 1) System.out.println("Arbitrage");
				else System.out.println("Ok");
			System.exit(0);
			
		}
	}

	public static void main(String[] args)
	{
		arbitrage main = new arbitrage();
		main.nacti();
	}
}