import java.lang.Math;

public class Matte
{
	public static void main(String[] args)
	{
		System.out.println(Math.sqrt(5786));

		System.out.println(lolsqrt(8314567891011L, 14));
	}

	public static double lolsqrt(long number, double guess)
	{
		for(int i = 0; i < 20; i++) {
			// Count
			guess = 0.5 * ( guess + number / guess );
		}

		return guess;
	}
}