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- #include <iostream>
- using namespace std;
- int main()
- {
- long long v[10000]={0},i,n,x,st=0,dr=0,mij=0;
- cin>>n;
- for(i=1; i<=n; i++)
- {
- cin>>x;
- if(x>mij)
- mij=x;
- v[x]++;
- }
- for(i=1; i<=mij; i++)
- {
- if(v[i]%2==1)
- st++;
- if(v[i]%2==0 && v[i]!=0)
- dr++;
- }
- if(st==0 || st==1)
- cout<<"DA";
- else
- cout<<"NU";
- return 0;
- }
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