#include <iostream>
#include <cstdio>

using namespace std;

unsigned int n,a[1048580];
int ok;
int main()
{
    int i,j;
    FILE *f=fopen("elmaj.in","r");
    FILE *g=fopen("elmaj.out","w");
    fscanf(f,"%u",&n);
    for(i=1;i<=n;i++)
        fscanf(f,"%u",&a[i]);
    j=0;
    for(i=1;i<=n;i++)
    {
        if(ok==0)
            j=i,ok=1;
        else if(a[i]==a[j])
            ok++;
        else
            ok--;
    }
    ok=0;
    for(i=1;i<=n;i++)
        if(a[i]==a[j])
            ok++;
    if(ok>n/2)
        fprintf(g,"%d %d\n",a[j],ok);
    else
        fprintf(g,"-1\n");
    return 0;
}