#include <cstdio>

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