cmmk

#include <iostream>
using namespace std;

int main()
{
	int n,k;
	cin>>n>>k;
	bool mai_mici_sau_egale=true;
	while(n)
        if(n%10>k)
        {
            mai_mici_sau_egale=false;
            break;
        }
        else
            n/=10;
    if(mai_mici_sau_egale)
        cout<<"DA\n";
    else
        cout<<"NU\n";
	return 0;
}