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Cod sursa(job #658012)
#include <fstream>
#define DN 1000005
using namespace std;
int n,v[DN],nr,k;
int main()
{
ifstream f("elmaj.in");
ofstream g("elmaj.out");
f>>n;
for(int i=1; i<=n; ++i) f>>v[i];
for(int i=1; i<=n; ++i) {
if(0==k) nr=v[i];
if(v[i]==nr) ++k;
else --k;
}
if(0==k) g<<"-1";
k=0;
for(int i=1; i<=n; ++i) if(nr==v[i]) ++k;
g<<nr<<' '<<k;
return 0;
}