[h‘θ]   by suzuki  2007/04/13

‰~Žό—¦ƒΞ‚Μ•½•ϋͺ‚π‹‚ί‚ζB
‚½‚Ύ‚΅AƒΞ‚ΝMathƒNƒ‰ƒX‚̐ÓI•Ο”‚πŽg‚€Ž–B

class SuzukiHW {
	public static void main(String args[]) {
		System.out.println(Math.sqrt(Math.PI));
	}
}