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Cod sursa(job #662593)
#include<fstream>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int i,n,m,nr,a[1000003],k;
int main()
{
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
for(i=1;i<=n;i++)
{
if(a[i]==a[i+1])
{
nr++;
m=a[i];
}
else
if(nr>0)
nr--;
else
nr=0;
}
for (i=1;i<=n;i++)
if(a[i]==m) k++;
if(k>n/2)
g<<m<<' '<<k;
else
g<<-1;
return 0;
}