#include<bits/stdc++.h>
using namespace std;
int main() {
    int a = 0,b = 0;
    int n,m,x;
    cin>>n;
    for(int i = 0;i < n;i ++ ) {
        cin>>x;
        a = max(a,x);
    }
    cin>>m;
    for(int i = 0;i < m;i ++ ) {
        cin>>x;
        b = max(b,x);
    }
    cout<<a<<" "<<b;
}