#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	double r, R;
	cin >> r >> R;
	
	const double pi = acos(-1);
	double lo = pi, up = 2 * pi;
	REP(i, 30) {
		double m = (lo + up) / 2;
		const double x = R * cos(m), y = R * sin(m);
		const double d = pow(x - R, 2) + y * y;
		if (d <= 4 * r * r + 1e-8) up = m;
		else lo = m;
	}
	
	const double theta = up;
	double s = theta / 2 * (pow(R + r, 2) - pow(R - r, 2));
	s += pi * r * r;
	
	printf("%.16f\n%.16f\n", theta, s);
}