using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please enter a segment:");

        double a=double.Parse(Console.ReadLine());

        Console.WriteLine("Please enter a segment:");

        double b=double.Parse(Console.ReadLine());

        double c2=Math.Pow(a,2)+Math.Pow(b,2);

        double c=Math.Sqrt(c2);

        Console.WriteLine("c= "+c);

    }

}