#include using namespace std; typedef long long ll; typedef pair pii; #define pb push_back #define mp make_pair #define rep(i,n) for(int i=0;i<(n);++i) int gcd(int a,int b){ if(a%b==0) return b; else{ a%=b; gcd(b,a); } } int main(){ cin.tie(0); ios::sync_with_stdio(false); int n;cin >> n; vector a(n); rep(i,n) cin >> a.at(i); int m;cin >> m; vector b(m); rep(i,m) cin >> b.at(i); for(int i=2;i1;--i){ b.at(i-2)*=b.at(i); } int x=0,y=0; if(n==1 && m==1){ x=a.at(0); y=b.at(0); } else if(n==1){ x=a.at(0)*b.at(1); y=b.at(0); } else if(m==1){ x=a.at(0); y=a.at(1)*b.at(0); } else{ x=a.at(0)*b.at(1); y=a.at(1)*b.at(0); } int g=gcd(x,y); cout << x/g << " " << y/g << endl; }