#include<cstdio>
#define NMAX 1000000
using namespace std;

int v[NMAX], n;

int main()
{
    int i, ap, candidat;
    FILE *fin, *fout;
    fin = fopen("elmaj.in","r");
    fout = fopen("elmaj.out","w");
    fscanf(fin,"%d",&n);
    for(i=0; i<n; i++)
        fscanf(fin,"%d",&v[i]);
    fclose(fin);
    candidat = v[0];
    ap = 1;
    for(i=1; i<n; i++)
        if(v[i] == candidat)
            ap++;
        else if(ap > 0)
            ap--;
        else
        {
            candidat = v[i];
            ap = 1;
        }
    ap = 0;
    for(i=0; i<n; i++)
        if(v[i] == candidat)
            ap++;
    if(ap > n/2)
        fprintf(fout,"%d %d\n",candidat,ap);
    else fprintf(fout,"-1\n");
    fclose(fout);
    return 0;
}