#include <fstream>

using namespace std;
ifstream cin("invers.in");
ofstream cout("invers.out");
int ogl(int n){
    int o=0;
    while(n)
    {
        o=o*10+n%10;
        n/=10;
    }
    return o;
}
int main()
{
    long long int n,x;
    cin>>n;
    for(int i=1;i<=n;++i)
    {
        cin>>x;
        int c=x;
        if(ogl(x)>x or x<2)
            cout<<"NU";
        else
        {
            cout<<"DA";
        }
        cout<<'\n';
    }
    return 0;
}