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Cod sursa(job #677160)
#include<iostream>
#include<fstream>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int main()
{
int n, a[100000],i,maj,nr=0;
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
maj=a[1];
for(i=1;i<=n;i++)
{
if(a[i]==maj)
nr++;
else
{
nr--;
if(nr<=0)
nr=0, maj=a[i];
}
}
nr=0;
for(i=1;i<=n;i++)
if(maj==a[i])
nr++;
if(nr<n/2+1)
nr=-1;
if(nr>0)
g<<maj<<" "<<nr<<'\n';
else
g<<-1;
return 0;
}