import java.io.*;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import java.util.*;

/**
 *
 * @author cteam01
 */
public class arbitrage {

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line;
        int u, h;
        while ((line = br.readLine()) != null) {
            u = Integer.parseInt(line);
            if (u == 0) {
                System.exit(0);
            }
            double d[] = new double[u];
            Map<String, Integer> uzly = new HashMap<String, Integer>();
            d[0] = 0;
            Arrays.fill(d, 1, u, 1e9);
            line = br.readLine();
            String[] tokens = line.split(" ");
            for (int i = 0; i < u; i++) {
                uzly.put(tokens[i], i);
            }
            line = br.readLine();
            h = Integer.parseInt(line);
            Hrana[] hrany = new Hrana[h];
            for (int i = 0; i < h; i++) {
                line = br.readLine();
                tokens = line.split(" ");
                int u1 = uzly.get(tokens[0]);
                int u2 = uzly.get(tokens[1]);
                tokens = tokens[2].split(":");
                double w = Double.parseDouble(tokens[0])/Double.parseDouble(tokens[1]);
                w = Math.log(w);
                hrany[i] = new Hrana(u1,u2,w);
            }
            
            for (int i = 0; i < u-1; i++) {
                for (Hrana hr : hrany) {
                    if(d[hr.v] > d[hr.u] + hr.w){
                        d[hr.v] = d[hr.u] + hr.w;
                    }
                }
            }
            boolean ok = true;
            for (Hrana hr : hrany) {
                if(d[hr.v] > d[hr.u] + hr.w){
                    ok = false;
                }
            }
            if(ok){
                System.out.println("Ok");
            } else {
                System.out.println("Arbitrage");
            }
            





        }
    }

    private static class Hrana {

        int u, v;
        double w;

        public Hrana(int u, int v, double w) {
            this.u = u;
            this.v = v;
            this.w = w;
        }
    }
}