#include<fstream.h>
long int n, x[51],y[51],max=0,s=1,j=1;

void back(int k)
{for(int i=k;i<=n;i++)
      if(x[i] && y[i])
      {s*=x[i];
	j*=y[i];
	if(s%j==0 && max<(s/j)) max=s/j;
	back(i+1);
	s/=x[i];
	j/=y[i];
}      }

int main()
{int i;
ifstream f("aliens.in");
ofstream g("aliens.out");
f>>n;
for(i=1;i<=n;i++)
	f>>x[i]>>y[i];
back(1);
g<<max<<'\n';
f.close();
g.close();
return 0;
}