#include <iostream>
#include <algorithm>
using namespace std;
int main(){
int m; cin >> m;
int a = 0;
while(m--){
int x; cin >> x;
a = max( a , x );
}
int n; cin >> n;
int b = 0;
while( n-- ){
int y; cin >> y;
b = max( b , y );
}
cout << a << " " << b << endl;
}