#include <iostream>
using namespace std;
int main(){
int n1,n2,n3;
int raspuns=0;
cout<<"Dati primul numar: "; cin>>n1;
cout<<"Dati al doilea numar: "; cin>>n2;
cout<<"Dati al treilea numar: "; cin>>n3;
if(n1<n2+n3 && n2<n1+n3 && n3<n1+n2){
raspuns=1;
}
if(raspuns==1){
cout<<"DA";
} else {cout<<"NU";}
return 0;
}