#include <iostream>
#include <cmath>


using namespace std;

double Rec (int n)
{
    if(n==1) return(1);
    return(sqrt(sqrt(n)+Rec(n-1)));
}

int main()
{
    int n;

    cout << "Vvedite kolvo elementov:" << endl;
    cin>> n;
    double k=0;
    //------------------------------------------
    for (int i=1;i<=n;i++)
    {
        k=sqrt(sqrt(i)+k);
    }
    //------------------------------------------
    cout<<k<<endl;
   cout<< Rec(n);
}