using System;

public class Program

{

    public static void Main()

    {

        Random rand = new Random(); 

        for(int i =0;i<10;i++){

        double u1 = 1.0-rand.NextDouble();

        double u2 = 1.0-rand.NextDouble();

        double randStdNormal = Math.Sqrt(-2.0 * Math.Log(u1)) * Math.Sin(2.0 * Math.PI * u2);

        double randNormal = Math.Abs(randStdNormal);

        Console.WriteLine(randNormal);

        }

    }

}