#include <iostream>
#include <istream>
#include <math.h>

using namespace std;

int main(){
    int n, s, XY, ZT,x=0,i;
    cout<<"Call numbers:";
    cin>>n;
    cout<<"Call hours:"<<endl;
    for(i=1; i<=n;i++){
    cout<<"hour=";
    cin>>XY;
    cout<<"minute=";
    cin>>ZT;
    if(XY>=0){
    if(XY<=24){
    if(ZT>=0){
    if(ZT<=60){
    if(ZT==0)
        x=1;

    if(XY==ZT)
        x=1;

    if(ZT==XY%10*10+XY/10)
        x=1;

    if(XY/10){
    if(XY%10-1){
    if(ZT/10-2){
    if(ZT%10-3)
        x=1;}}}

    s=sqrt(XY*100+ZT);
    if(s%2==0)
        x=1;}
    if(x==1)
    cout<<"DA \n";
    else
    cout<<"NU \n";}}}}
}