#include<fstream.h>
ifstream f("invers.in");
ofstream g("invers.out");
int inv,c,x,y,i;
int main()
{
	f>>x;
	y=x;
	inv=0;
	while(y)
	{
		c=y%10;
		y=y/10;
		inv=inv*10+c;
	}
	if(x=inv+x)
	g<<"DA"<<"\n";
	else
	g<<"NU"<<"\n";
	f.close();
	g.close();
	return 0;
}