import java.io.*;
import java.util.*;

public class Main implements Runnable {
	static class Mapper {
		Map<String, Integer> mapper = new HashMap<String, Integer>();

		public int get(String s) {
			if (mapper.containsKey(s)) {
				return mapper.get(s);
			} else {
				mapper.put(s, mapper.size());
				return mapper.size() - 1;
			}
		}
	}
	private void solution() throws IOException {
		while (in.hasNext()) {
			int n = in.nextInt();
			if (n == 0) {
				break;
			}
			Mapper mapper = new Mapper();
			for (int i = 0; i < n; ++i) {
				in.next();
			}
			double[][] path = new double[n][n];
			for (double[] a : path) {
				Arrays.fill(a, Double.NaN);
			}
			int q = in.nextInt();
			for (int i = 0; i < q; ++i) {
				int x = mapper.get(in.next());
				int y = mapper.get(in.next());
				String t = in.next();
				String[] lex = t.split(":");
//				if (Double.isNaN(path[x][y])) {
					path[x][y] = Math.log((double) Integer.parseInt(lex[1]) / Integer.parseInt(lex[0]));
//				} else {
//					path[x][y] = Math.max(path[x][y], Math.log((double) Integer.parseInt(lex[1]) / Integer.parseInt(lex[0])));
//				}
			}
			for (int k = 0; k < n; ++k) {
				for (int i = 0; i < n; ++i) {
					if (!Double.isNaN(path[i][k])) {
						for (int j = 0; j < n; ++j) {
							if (!Double.isNaN(path[k][j])) {
								if (Double.isNaN(path[i][j]) || path[i][j] < path[i][k] + path[k][j]) {
									path[i][j] = path[i][k] + path[k][j];
								}
							}
						}
					}
				}
			}
			boolean ok = true;
			for (int i = 0; i < n; ++i) {
				if (!Double.isNaN(path[i][i])) {
					if (path[i][i] - 1e-9 > 0) {
						ok = false;
					}
				}
			}
			out.println(ok ? "Ok" : "Arbitrage");
		}
	}

	public void run() {
		try {
			solution();
			in.reader.close();
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(1);
		}
	}

	public static void main(String[] args) {
		new Thread(null, new Main(), "", 1 << 28).start();
	}

	private class Scanner {
		BufferedReader reader;
		StringTokenizer tokenizer;

		public Scanner(Reader reader) {
			this.reader = new BufferedReader(reader);
			this.tokenizer = new StringTokenizer("");
		}

		public boolean hasNext() throws IOException {
			while (!tokenizer.hasMoreTokens()) {
				String line = reader.readLine();
				if (line == null) {
					return false;
				}
				tokenizer = new StringTokenizer(line);
			}
			return true;
		}

		public String next() throws IOException {
			hasNext();
			return tokenizer.nextToken();
		}

		public int nextInt() throws IOException  {
			return Integer.parseInt(next());
		}
	}

	Scanner in = new Scanner(new InputStreamReader(System.in));
	PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
}