#include <iostream>
#include <math.h>
using namespace std;

int main()
{
    long long int n=0,i,a,b,x,ok,j;
    cin>>n;
    for(j=1;j<=n;j++)
    {
        cin>>x;
        i=1;
        if(x<0) x=-x;
        while(i*i*i<x)
            i++;
        if(i*i*i==x) cout<<"DA"<<endl; else cout<<"NU"<<endl;
    }
    return 0;
}