#include <iostream>

using namespace std;
int cmmdc(int a, int b)
{
    int r;
    while(b)
    {
        r=a%b;
        a=b;
        b=r;
    }
    return a;
}
int main()
{
    int n, a, b, x;
    int numarator=0, numitor=1;
    cin>>n;
    int i;
    for(i=1; i<=n; ++i)
    {
        cin>>a>>b;
        numarator=(a*numitor)+(b*numarator);
        numitor=b*numitor;

        x=cmmdc(numarator, numitor);
        numarator/=x, numitor/=x;//o aduci la forma ireductibila
    }
    cout<<numarator<<" "<<numitor;
    return 0;
}