#include <iostream>
#include <cmath>
#define PI 3.1415926
using namespace std;

double f(double e, double x){
	int i = 0;
	double p = x;
	double s = x;
	while (p > e){
		p*=(x*x*(2*i + 1)*(2*i + 1))/(2*(i+1)*(2*i + 3));
		s+=p;
		i++;
	}
	return s;
}

int main() {
	double e; //точность
	double x;
	cin >> e >> x;
	cout << PI/2 - f(e, x) << endl;
	cout << acos(x);
	return 0;
}