Răspuns:
1.
#include <iostream>
using namespace std;
int main()
{
int n,a=1,i=1;
cin>>n;
for(i=0;a<=n;i++)
{
a*=2;
}
cout<<i;
return 0;
}
2.
#include <iostream>
using namespace std;
int pal(int n)
{
int cif,pal=0;
while(n>0)
{
cif=n%10;
n/=10;
pal=pal*10+cif;
}
return pal;
}
bool prim(int a, int b)
{
int r;
while(b)
{
r=a%b;
a=b;
b=r;
}
if (a == 1) return true;
else return false;
}
int main()
{
int a,b;
cin>>a>>b;
if(prim(pal(a),pal(b))==true)cout<<"DA";
else cout<<"NU";
return 0;
}
