#include <iostream>
using namespace std;
short vcn[10], vcm[10]; //vectorii cifrelor lui n si m
int main()
{
int n, m, cif, comune;
cout << "n="; cin >> n;
cout << "m="; cin >> m;
while (n)
{
cif=n%10;
++vcn[cif];
n/=10;
}
while (m)
{
cif=m%10;
++vcm[cif];
m/=10;
}
comune=0;
for (cif=0; cif<10; ++cif)
if (vcn[cif]>0 && vcm[cif]>0) { comune=1; break; }
if (comune==1) cout << "DA";
else cout << "NU";
return 0;
}
