#include <iostream>
#include <math.h>
using namespace std;
int main()
{
    long long n,i;
    double t;
    cin>>n;
    long long x[n];
    for (i=0;i<n;i++)
        cin>>x[i];
    for (i=0;i<n;i++)
    {
        t=cbrt(x[i]);
        if (int(t)*int(t)*int(t)==x[i])
            cout<<"DA"<<endl;
        else cout<<"NU"<<endl;
    }
    return 0;
}