#include <bits/stdc++.h>

using namespace std;
//ifstream f("elmaj.in");
//ifstream h("elmaj.in");

ofstream g("elmaj.out");
int n,i,e,cnt,x,poz;
char buff[1010];
const int DIM=1000;
void citeste(int &);
int main()
{
    freopen("elmaj.in","rb",stdin);
    citeste(n);
    citeste(e);
    cnt=1;
    for(i=2;i<=n;i++)
    {
        citeste(x);
        if(cnt==0)
            e=x,cnt=1;
        else
            if(e==x)
                cnt++;
            else
                cnt--;
    }
    cnt=0;
    fclose(stdin);
    freopen("elmaj.in","rb",stdin);
    memset(buff,0,sizeof(buff));
    citeste(n);
    for(i=1;i<=n;i++)
    {
        citeste(x);
        if(x==e)
            cnt++;
    }
    if(cnt>n-cnt)
        g<<e<<' '<<cnt;
    else
        g<<-1;
    return 0;
}
void citeste(int &numar)
{
     numar = 0;
     while (buff[poz] < '0' || buff[poz] > '9')
          if (++poz == DIM)
               fread(buff,1,DIM,stdin),poz=0;
     while ('0'<=buff[poz] && buff[poz]<='9')
     {
          numar = numar*10 + buff[poz] - '0';
          if (++poz == DIM)
               fread(buff,1,DIM,stdin),poz=0;
     }
}