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#include <iostream>
#include <fstream>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
unsigned int a[1000001];
int main()
{int n,i,x,nr,m=0;
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
x=a[i];
nr=1;
for(i=2;i<=n;i++)
{
if(a[i]==x) nr++;
else nr--;
if(nr==0)
{
x=a[i];
nr=1;
}
}
for(i=1;i<=n;i++)
if(a[i]==x) m++;
int p=n/2;
p++;
if(m<p) g<<-1;
else g<<x<<' '<<m;
return 0;
}