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#include <bits/stdc++.h>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int n,i,c,nr,v[1000100];
int main()
{
f>>n;
for(i=1;i<=n;i++)f>>v[i];
c=v[1];
nr=1;
for(i=2;i<=n;i++)
{
if(c==v[i])nr++;
else nr--;
if(nr==0)
{
c=v[i];
nr=1;
}
}
nr=0;
for(i=1;i<=n;i++)
{
if(v[i]==c)nr++;
}
if(nr>=n/2+1)
{
g<<c<<" "<<nr;
}
else g<<-1;
return 0;
}