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Cod sursa(job #870137)
#include<fstream>
using namespace std;
ifstream in("elmaj.in");
ofstream out("elmaj.out");
int i,n,nr=1,x,a[1000001];
int main()
{
in>>n;
for (i=1;i<=n;i++)
{
in>>a[i];
if (a[i]==x) nr++;
else nr--;
if (nr==0)
{
x=a[i];
nr=1;
}
}
nr=0;
for (i=1;i<=n;i++)
if (a[i]==x) nr++;
if (nr>=n/2+1) out<<x<<' '<<nr;
else out<<'-1';
}