#include <iostream>
#include <cstring>
using namespace std;
int main() {
char a[101], b[101];
f.getline(a, 101);
int n;
ifstream f("pbinfo.in");
ofstream g("pbinfo.out");
f >> n;
bool ok = false;
for (int k = 0; k < n; ++k) {
f >> b;
int i = 0;
while (a[i] != '\0') {
int j = 0;
bool adev = true;
while (b[j] != '\0') {
if (a[i + j] != b[j])
adev = false;
j++;
}
if (adev)
ok = true;
i++;
}
}
int i = 0;
b[0] = 'v', b[1] = 'i', b[2] = 'r', b[3] = 'u', b[4] = 's', b[5] = '\0';
while (a[i] != '\0') {
int j = 0;
bool adev = true;
while (b[j] != '\0') {
if (a[i + j] != b[j])
adev = false;
j++;
}
if (adev)
ok = true;
i++;
}
if (ok)
g << "DA";
else
g << "NU";
return 0;
}
