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#include<iostream>
#include<stdlib.h>
#include<fstream>
using namespace std;
int a[100];
int maj(int n, int a[100],int &c)
{
int k=0,i;
for(i=0;i<n;i++)
if(k==0)
{k=a[i];
c=1;
}
else
if(a[i]==k)
c++;
else
if(c==1)
{k=0;
c=0;
}
else
c--;
c=0;
for (i=0;i<n;i++)
{
if(a[i]==k)
c++;
}
if(c<=n/2)
return -1;
else
return k;
}
int main()
{int i;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int n,m;
f>>n;
for(i=0;i<n;i++)
f>>a[i];
int k;
m=maj(n,a,k);
if(m!=-1)
g<<m<<' '<<k;
else
g<<"-1";
return 0;
}