Write a C# program to check the nearest value of 20 of two given integers and return 0 if two numbers are same

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
public class Exercise40
{
    public static void Main( )
    {
        Console.WriteLine("\nInput first integer:");  
        int x = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Input second integer:");  
        int y = Convert.ToInt32(Console.ReadLine());
        int n = 20;
        var val1 = Math.Abs(x - n);
        var val2 = Math.Abs(y - n);
        Console.WriteLine(val1 == val2 ? 0 : (val1 < val2 ? x : y));   
    }
}