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