1.
#include <iostream>
using namespace std;
int main()
{
int a,b;
cin>>a>>b;
if(a>0,b>0)
cout<<"DA";
else
cout<<a+b;
}
2.
#include <iostream>
using namespace std;
int main()
{
int a,b,c;
cin>>a>>b>>c;
if(a>b)
cout<<a;
if(b>c)
cout<<b;
if(c>b)
cout<<c;
if(a>c)
cout<<a;
if(c>a)
cout<<c;
}