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#include <bits/stdc++.h>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
#define N 1000005
int main()
{
int n,i,ct=1,x,a[N];
fin>>n;
for(i=1;i<=n;++i) fin>>a[i];
fin.close();
x=a[1];
ct=1;
for(i=2;i<=n;++i)
if(x==a[i]) ++ct;
else if(!ct) x=a[i],ct=1;
else --ct;
ct=0;
for(i=1;i<=n;i++)
if(a[i]==x) ct++;
if(!ct) {fout<<-1;return 0;}
fout<<x<<" "<<ct<<"\n";
fout.close();
return 0;
}