这是我的代码，它在VS 2022中运行良好，但当我试图在CodeForces中提交它时，我得到了一个运行时错误。
我该怎么解决呢？？？？

using System;

class Program
{
    public static void Main(string[] args)
    {
        string? Val1 = Console.ReadLine(); 
        int Number1 = Convert.ToInt32(Val1);

        string? Val2 = Console.ReadLine(); 
        int Number2 = Convert.ToInt32(Val2);

        if (Number2 <= (Number1 + 1) / 2)
        {
            Console.WriteLine(Number2 * 2 - 1);
        }
        else
        {
            Console.WriteLine((Number2 - (Number1 + 1) / 2) * 2);
        }
    }
}