#include<bits/stdc++.h>
using namespace std;
int main()
{
    double n;
    int m;
    cin>>n;
    cin>>m;
    double l = -1000000,r = 1000000;
    while(r-l>1e-7)
    {
        double x = (r+l)/2;
        if(pow(x,m)<=n)
        {
            l = x;
        }
        else
        {
            r = x;
        }
    }
    printf("%.6lf",r);
}