#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,sum=0;
cin>>n;
string s=to_string(n);
if(s.size()==3)
for(int i=0;i<s.size();i++)
sum+=s[i]-'0';
cout<<sum;
}
else
int r=sqrt(n);
if(r*r==n)
cout<<"DA";
cout<<"NU";
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#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,sum=0;
cin>>n;
string s=to_string(n);
if(s.size()==3)
{
for(int i=0;i<s.size();i++)
sum+=s[i]-'0';
cout<<sum;
}
else
{
int r=sqrt(n);
if(r*r==n)
cout<<"DA";
else
cout<<"NU";
}
}