#include <cstdio>
using namespace std;
int n,r,v[100000],i,x;
int main()
{
    freopen("elmaj.in","r",stdin);
    freopen("elmaj.out","w",stdout);
    scanf("%d",&n);


    for(i=1;i<=n;i++)
    {
        scanf("%d",&x);
        v[x]++;
        if(v[x]>v[r])
            r=x;
    }
    if(v[r]>=n/2+1)
        printf("%d %d",r,v[r]);
    else
        printf("-1");
    return 0;
}