Sper sa iti fie de ajutor!
#include <iostream>
using namespace std;
int main()
{
int a,b,n,i,c,d,j;
cin >> a >> b >> n;
if (a>b)
swap(a,b);
d=0;
for (i=a; i<=b; i++)
{
c=0;
for (j=1; j<=a; j++)
{
if (a%j==0)
c=c+1;
}
if (c<=4)
d=d+1;
}
if (d>=n)
cout << "DA";
else
cout << "NU";
return 0;
}