#include<fstream>
using namespace std;
unsigned long long n,i;
unsigned long long x;
unsigned long long inv(unsigned long long nr)
{
    unsigned long long k=0;
    unsigned long long cop=nr;
    while(cop!=0)
    {
        k=k*10+cop%10;
        cop/=10;
    }
    return k;
}
int main()
{
    ifstream f("invers.in");
    ofstream g("invers.out");
    unsigned long long ok=0;
    f>>n;
    for(unsigned long long j=1;j<=n;j++)
    {
        f>>x;
        ok=0;
        for(i=x/2;i<=x&&ok==0;i++)
        {
            if(inv(i)+i==x)
            {
                ok=1;
            }
        }
        if(ok==1)
        g<<"DA\n";
        else
        g<<"NU\n";
    }
    return 0;
}