#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <utility>
#include <stack>
#include <stack>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <list>

#define FILL(a,b) fill(a,a+(sizeof(a)/sizeof(a[0])),b)
#define FOR(a,b,c) for(int a=b; a<=c; a++)
#define DOWNFOR(a,b,c) for(int a=b; a>=c; a--)
#define SIZEOF(a) (sizeof(a)/sizeof(a[0]))
#define FORARR(i,a) for(unsigned i=0; i<SIZEOF(a); i++)
#define FOREACH(a,b) for(__typeof((b).begin()) a=(b).begin(); a!=(b).end(); a++)
#define GETI(a) scanf("%d", &a)

using namespace std;

struct exch {
  string destCode;
  double rate;
  exch(string d, double r) : destCode(d), rate(r) {}
};

int main(void){
  
  int C;
  while (scanf("%d", &C) == 1 && C) {
    vector<string> currencies;
    map<string,deque<exch> > adj;
    FOR(i,1,C) {
      string code;
      cin >> code;
      currencies.push_back(code);
    }

    int rates;
    cin >> rates;
    FOR(i,1,rates) {
      string from, to;
      int fr, tr;
      char colon;
      cin >> from >> to >> fr >> colon >> tr;
      exch e(to, (double)fr / tr);
      adj[from].push_back(e);
    }
/*#ifdef DEBUG
    FOREACH(i,adj) {
      printf("from %s to...\n", i->first.c_str());
      FOREACH(a,i->second) {
	printf("  %s for %f\n", a->destCode.c_str(), a->rate);
      }
    }
#endif*/
    
    map<string,double> shortestPath;
    FOREACH(i,currencies) {
      shortestPath[*i] = 0;
    }
    
    FOR(v,0,C-1) {
      
      if (shortestPath[currencies[v]] != 0) continue;
    
      shortestPath[currencies[v]] = 1;
      
      
      FOR(i,1,C) {
	bool changed = false;
	FOREACH(c,currencies) {
	  if (shortestPath[*c] == 0) continue;
	  FOREACH(a,adj[*c]) {
	    double dcr = shortestPath[a->destCode];
	    if (dcr == 0 || a->rate * shortestPath[*c] < dcr) {
	      shortestPath[a->destCode] = a->rate * shortestPath[*c];
	      changed = true;
	    }
	  }
	}
	if (!changed) {
	  break;
	}
      }
      
      FOREACH(c,currencies) {
	if (shortestPath[*c] == 0) continue;
	FOREACH(a,adj[*c]) {
	  double dcr = shortestPath[a->destCode];
	  if (dcr == 0 || a->rate * shortestPath[*c] < dcr) {
	    cout << "Arbitrage" << endl;
	    goto out;
	  }
	}
      }
    }
    cout << "Ok" << endl;
out:
    {}
    
  }
  
  
  
    return 0;
}