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#include <bits/stdc++.h>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int v[100005],em,n,ec,cnt=0;
int main()
{
f>>n;
for(int i=1; i<=n; i++)
{
f>>v[i];
if(!cnt)
{
cnt=1;
em=v[i];
}
else if(v[i]==em)
cnt++;
else
cnt--;
}
cnt=0;
for(int i=1; i<=n; i++)
if(v[i]==em)
cnt++;
if(cnt>=n/2+1)
g<<em<<' '<<cnt<<'\n';
else
g<<"-1\n";
return 0;
}