#include <iostream>
using namespace std;
int Verif_Pare(int a[],int n)
{
int i;
for(i=0;a[i]%2==0 and a[i]>0 and i<n;i++)
;
if(i==n)return 1;
return 0;
}
int main()
{
int a[]={6,6,2,2};
if(Verif_Pare(a,4)==0)
cout<<"NU EXISTA"<<"\n";
else cout<<"Adevarat"<<"\n";
return 0;
}