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#include <bits/stdc++.h>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int main() {
int n;
fin >> n;
vector<int> v(n);
for(auto &it: v) {
fin >> it;
}
nth_element(v.begin(), v.end(), v.begin() + v.size() / 2);
int med = v[v.size() / 2 - 1], cnt = 0;
for(const auto &it: v) {
if(it == med) {
cnt++;
}
}
if(cnt > v.size() / 2) {
fout << med << " " << cnt << '\n';
} else {
fout << "-1\n";
}
return 0;
}