Гарри Поттер и спасение Сириуса Блэка

using System;

class HelloWorld {
  static void Main() {
    int length = int.Parse(Console.ReadLine());
    int time = int.Parse(Console.ReadLine());

    int distance = CalculateDistance(length, time);

    Console.WriteLine(distance);
  }

  static int CalculateDistance(int corridor, int Time){
    int cycles = Time / (2 * corridor);

    int remaningTime = Time % (2 * corridor);
    int distance = (remaningTime <= corridor) ? remaningTime : 2 * corridor - remaningTime;

    return distance;

    }
}