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Cod sursa(job #739949)
#include <cstdio>
#include <cstdlib>
using namespace std;
int main()
{
freopen("nim.in","r",stdin);
freopen("nim.out","w",stdout);
int n,t,x;
scanf("%i", &t);
for(;t;t--)
{
scanf("%i", &n);
int xorsum=0;
for(int i=0;i<n;i++)
{
scanf("%i", &x);
xorsum=xorsum^x;
}
if(xorsum) printf("DA\n");
else printf("NU\n");
}
return 0;
}