#include <iostream>

using namespace std;

int main()
{
    int n,i, v[101], a=0, b=0, c=-10000;
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cin>>v[i];
        if(v[i]%2==0)
            a++;
    }
    for(i=1;i<=n;i++)
    {
        if(v[i]%2==0 && v[i]>c)
        {
            c=v[i];
            b++;
        }
    }
    if(a==b)
        cout<<"DA";
    else
        cout<<"NU";
    return 0;
}