using System;

public class Program

{

    public static void Main()

    {

        String S;

        int s1, s2, s3, v1, v2, v3;

        double t1, t2;

        Console.WriteLine("Ievadiet attālumu vilka un lapse");

        S=Console.ReadLine();

        s1 = int.Parse(S);

        Console.WriteLine("Ievadiet attālumu lapse un alai");

        S=Console.ReadLine();

        s2 = int.Parse(S);

        Console.WriteLine("Ievadiet v ātrumu");

        S=Console.ReadLine();

        v1 = int.Parse(S);

        Console.WriteLine("Ievadiet l ātrumu");

        S=Console.ReadLine();

        v2 = int.Parse(S);

        v3 = v1 - v2;

        t1=s1/v3;

        t2=s2/v2;

        if (v3 <= 0||t2 < t1)

        {

            Console.WriteLine("lapsa aizmuks no vilkam pēc "+t2+" sekundēm");

        }

        else 

        {

            Console.WriteLine("vilks sasniegs lapsu pēc "+t1+" sekundēm");

        }

    }

}