//Rextester.Program.Main is the entry point for your code. Don't change it.
//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("กรุณากรอกคะแนนสอบ : ");
            int score = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("คุณได้คะแนน : "+score);
            if (score < 50) 
                { Console.WriteLine("เสียใจด้วย คุณสอบตก"); }
        }
    }
}