#include <iostream>
using namespace std;

double calculatePower(double base, int exponent){
	double res=1.0;
	while(exponent > 0){
		if(exponent%2==1){
			res=res*base;
		}
		base=base*base;
		exponent=exponent/2.0;
	}
	return res;
}
int main() {
	double m;
	int n;
	cin>>n>>m;
	double low=0.0, high=m;
	double eps=1e-6;
	
	while(high-low>eps){
		double mid=(low+high)/2.0;
		if(calculatePower(mid, n)<m)
			low=mid;
		else
			high=mid;
	}
	cout<<low;
	return 0;
}