#include <bits/stdc++.h>
using namespace std;
int n,a,maj,k,i;
int main()
{
    freopen("elmaj.in","r",stdin);
    freopen("elmaj.out","w",stdout);
    scanf("%d",&n);
    scanf("%d",&a);
    maj=a;
    k=1;
    for(i=2;i<=n;++i)
    {
        scanf("%d",&a);
        if(a==maj) ++k;
        else --k;
        if(k<0) {maj=a;k=1;}
    }
    freopen("elmaj.in","r",stdin);
    k=0;
    scanf("%d",&n);
    for(i=1;i<=n;++i)
    {
        scanf("%d",&a);
        if(a==maj) ++k;
    }
    if(k>n/2) printf("%d %d",&maj,&k);
    else printf("-1");
    return 0;
}