#include <vector>
#include <string>
#include <iostream>
#include <cstdlib>

using namespace std;

bool visited[200];
string curmap[200];

struct koef {
 unsigned long x,y;
 bool valid;
};

koef hrany[200][200];

int curnum;

unsigned long gcd(unsigned long a, unsigned long b)
{
 unsigned long t;
 while (b>0)
 {
  t=a%b;
  a=b;
  b=t;
 }
 return a;
}

void trim(koef& k)
{
 unsigned long g=gcd(k.x,k.y);
 k.x/=g;
 k.y/=g;
}

bool contains(vector<int>& v, int in)
{
 int max=v.size();
 for(int i=0;i<max;i++)
  if(v.at(i)==in)
   return true;
 return false;
}



int hledej(int cur, koef k, vector<int> visit)
{
 visited[cur]=true;
 if(contains(visit,cur))
 {
  if(k.x<k.y)
  {
//for(int i=0;i<visit.size();i++)
//cout<<visit.at(i)<<"\n";
//cout<<cur<<"\n";
//cout<<k.x<<" "<<k.y<<"\n";
   return 0;
  }   
  return 1;
 }
 else
 {
  visit.push_back(cur);
  for(int i=0;i<200;i++)
  {
   if(!hrany[cur][i].valid)
    continue;
   koef t;
   t.x=k.x*hrany[cur][i].x;
   t.y=k.y*hrany[cur][i].y;
   trim(t);
   if (hledej(i,t,visit)==0)
   {
    return 0;
   }
  }
 }
 return 1;
}

void cleardata()
{
curnum=0;
koef t;
t.valid=false;
for(int i=0;i<200;i++)
 {
 for(int j=0;j<200;j++)
  hrany[i][j]=t;
 visited[i]=false;
 curmap[i]="";
 }

}


int findcurr(string in)
{
 for(int i=0;i<200;i++)
  if(in.compare(curmap[i])==0)
   return i;
 return -1;
}

int main()
{
 string s1, s2, s3;
 unsigned long excount;
 while(true)
 {
  next:
  cleardata();
  cin>>curnum;
  if(curnum==0) exit(0);
  for(int i=0;i<curnum;i++)
   cin>>curmap[i];
  cin>>excount;
  for(int i=0;i<excount;i++)
  {
   cin>>s1;
   cin>>s2;
   cin>>s3;
   koef t;
   sscanf(s3.c_str(),"%lu:%lu",&(t.x),&(t.y) );
   t.valid=true;
   int from,to;
   from = findcurr(s1);
   to = findcurr(s2);
//cout<<"hrana "<<s1<<" "<<s2<<"\n";
//cout<<"hrana "<<from<<" "<<to<<"\n";
   hrany[from][to]=t;
  }
  for(int i=0;i<curnum;i++)  
  {
   if(!visited[i])
   {
    vector<int> v;
    koef k;
    k.x=1;
    k.y=1;
    if(hledej(i,k,v)==0)
    {
     cout<<"Arbitrage\n";
     goto next;
    }
   }
  }
 cout<<"Ok\n";
 }
 

return 0;
}