#include <iostream>
#include <fstream>
#include <cstdio>
using namespace std;
ofstream g("elmaj.out");
int n,v,a[1000001],i,c,j;
int main()
{
    freopen("elmaj.in","r",stdin);
    scanf("%d",&n);
    v=1;
    for(i=1;i<=n;i++)
    {
        scanf("%d",&a[i]);
        if(a[i]==c) v++;
        else v--;
        if(v==0)
        {
            c=a[i];
            v=1;
        }
    }
    for(i=1;i<=n;i++)
    {
        if(a[i]==c) j++;
    }
    if(j>=n/2+1) g<<c<<" "<<j;
    else g<<-1;
    return 0;
}