#include <bits/stdc++.h>
#define maxN 1000002
using namespace std;
int n, m, v[maxN], ap, no;
void read()
{
    freopen("elmaj.in", "r", stdin);
    scanf("%d", &n);
}
void solve()
{
    int i;
    for (i = 1; i <= n; ++ i)
    {
        scanf("%d", &v[i]);
        if (ap == 0)
           no = v[i];
        if (no == v[i])
        ++ ap;
        else
            -- ap;
    }
    ap = 0;
    for (i = 1; i <= n; ++ i)
    if (v[i] == no)
       ++ ap;
}
void write()
{
    freopen("elmaj.out", "w", stdout);
    if (ap * 2 < n)
       printf("-1");
    else
    printf("%d %d", no, ap);
}
int main()
{
    read();
    solve();
    write();
    return 0;
}