#include <cstdio>
using namespace std;
int n,x,ap,sol;
int main()
{
    freopen("elmaj.in","r",stdin);
    freopen("elmaj.out","w",stdout);
    scanf("%d",&n);
    scanf("%d",&x);
    ap=1;
    sol=x;
    for(int i=1;i<=n;++i)
    {
        scanf("%d",&x);
        if(x==sol) ++ap;
        else --ap;
        if(ap<0)
        {
            sol=x;
            ap=1;
        }
    }
    freopen("fisier.in","r",stdin);
    scanf("%d",&x);
    ap=0;
    for(int i=1;i<=n;++i)
    {
        scanf("%d",&x);
        if(x==sol) ++ap;
    }
    if(ap==n/2+1) printf("%d %d",sol,ap);
    else printf("-1");
    return 0;
}