#include <iostream>
using namespace std;
bool prim(int m)
{
if (m==0 || m==1) return false;
if (m==2) return true;
if (m>2)
{
if (m%2==0) return false;
else
{
for (int i=3; i*i<=m; ++i)
if (m%i==0) return false;
}
return true;
}
}
int ogl(int m)
{
int p=0;
while (m)
{
p=p*10+m%10;
m/=10;
}
return p;
}
int main()
{
int num;
cin >> num;
if (prim(num) && prim(ogl(num))) cout << "DA";
else cout << "NU";
return 0;
}