#include<iostream>
#include<cmath>

using namespace std;

float f(float y, int n, float x)
{
    float p=1;
    for(int i=1;i<=n;i++) p=p*y;
    return p-x;
}

float DEI(float s, float d, int n, float x)
{
   if(d-s<=0.0001) return s;
   else
   { float m=(s+d)/2;
     if(f(m,n,x)==0) return m;
     else if(f(m,n,x)<0) return DEI(m,d,n,x);
          else return DEI(s,m,n,x);
   }
}

int main()
{
  int n;
  float x;
  cin>>n>>x;
  cout<<DEI(0,sqrt(x),n,x);
  return 0;
}