using System;

public class Program

{

    public static void Main()

    {

        int num1;

        int num2;

        Console.WriteLine("Enter 2 numbers");

        num1=Int32.Parse(Console.ReadLine());

        num2=Int32.Parse(Console.ReadLine());

        if(num1<num2)

        Console.WriteLine(num2-num1);

        else

        Console.WriteLine(num1-num2);

    }

}