#include <stdio.h>
#include <math.h>
#include <string.h>
#define MAX 300

char meny[MAX][4];

int N;
double m[MAX][MAX];

int index(char mena[])
{
	for (int i = 0; i < N; i++)
	{
		if (strcmp(mena, meny[i]) == 0)
			return i;
	}
	printf("Mena %s nenalezena!\n", mena);
	return -1;
}

int main()
{
	while (1)
	{
		scanf("%d\n", &N);
		if (N == 0)
			return 0;
		for (int i = 0; i < N; i++)
		{
			char c[4];
			scanf("%c%c%c ", &c[0],&c[1],&c[2]);
			for (int j = 0; j < 3; j++)
				meny[i][j] = c[j];
			meny[i][3] = '\0';
		}

		for (int i = 0; i < N; i++)
			for(int j = 0; j < N; j++)
				m[i][j] = 100000;
		
		for (int i = 0; i < N; i++)
				m[i][i] = 0;
		int M; scanf("%d\n", &M);
		for (int i = 0; i < M; i++)
		{
			int a,b;
			char c[4];
			scanf("%c%c%c ", &c[0],&c[1],&c[2]);
			c[3] = '\0';
			a = index(c);
			scanf("%c%c%c ", &c[0],&c[1],&c[2]);
			c[3] = '\0';
			b = index(c);
			int z,d;

			scanf("%d:%d\n", &z,&d);
			
			double podil = (double) d / (double) z;
			podil = log(podil);
			m[a][b] = podil * -1;
		}

		for (int k = 0; k < N; k++)
		{
			for (int i = 0; i < N; i++)
			{
				for (int j = 0; j < N; j++)
				{
					if (m[i][k] + m[k][j] < m[i][j])
						m[i][j] = m[i][k] + m[k][j];
				}
			}
		}

		int arb = 0;
		for (int i = 0; i < N; i++)
			if (m[i][i] < 0)
				arb = 1;

		if (arb == 1)
			printf("Arbitrage\n");
		else
			printf("Ok\n");
	}
}