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#include<fstream>
using namespace std;
ifstream F("elmaj.in");
ofstream G("elmaj.out");
#define Z 2048
int n,i,a[1000000],p=Z,l,k,j;
char s[Z];
inline char A()
{
if(p==Z)
F.read(s,Z),p=0;
return s[p++];
}
int B()
{
int n=0;
char c;
for(c=A();isdigit(c);n=n*10+c-48,c=A());
return n;
}
int main()
{
for(n=B();i<n;a[i]=B(),!k?l=a[i],k=1:a[i]==l?++k:--k,++i);
for(i=0;i<n;j+=a[i++]==l);
return j>n/2?G<<l<<' '<<j:G<<-1,0;
}