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Cod sursa(job #633860)
#include <iostream>
#include <fstream>
#include <algorithm>
#define DN 1000005
using namespace std;
int n,v[DN];
int main()
{
ifstream f("elmaj.in");
ofstream g("elmaj.out");
f>>n;
for(int i=1; i<=n; ++i) f>>v[i];
sort(v+1,v+n+1);
int cs=1;
for(int i=2; i<=n; ++i) {
if(v[i]==v[i-1]) ++cs;
else {
if(cs>n/2) {
g<<v[i-1]<<' '<<cs;
return 0;
}
cs=1;
}
}
if(cs>n/2) {
g<<v[n]<<' '<<cs;
return 0;
}
g<<"-1";
return 0;
}