#include <iostream>
using namespace std;

double ridicare(double x, int n)
{
    if(n<0)
    {
        x=1/x;
        n=-n;
    }
    if(n==0)
        return 1;
    double y=1;
    while(n)
        if(n%2==0)
        {
            x=x*x;
            n=n/2;
        }
        else
        {
            y=x*y;
            x=x*x;
            n=(n-1)/2;
        }
    return y;
}

int main()
{
    cout << ridicare(2,29);
    return 0;
}