#include <iostream>

using namespace std;

int main()
{
    int n,i,v[1000],j,nr,p;
    cin>>n;
    for(i=1;i<=n;i++){
        cin>>v[i];
        p=0;}
    for(i=1;i<=n;i++)
    {nr=0;
        for(j=1;j<=n;j++)
        {
            if(v[i]==v[j])
                    nr=nr+1;
        }
         if(nr>n/2&&p==0)
                {cout<<endl<<v[i]<<"  "<<nr;
                p=1;
                }
    }
    if(p==0)
    cout<<"-1";

    return 0;
}