using System;

using System.Collections.Generic;

public class Program

{

    public static readonly int[][] Dirs = new int[][] {

        new int[]{2,1},

        new int[]{2,-1},

        new int[]{1,2},

        new int[]{1,-2},

        new int[]{-2,1},

        new int[]{-2,-1},

        new int[]{-1,2},

        new int[]{-1,-2}

    };

    public static int GetMinKnightMoves(int x, int y) {

         x = Math.Abs(x);

         y = Math.Abs(y);

         Queue<int[]> queue = new Queue<int[]>();

         HashSet<string> visited = new HashSet<string>();

         queue.Enqueue(new int[]{0,0});

         visited.Add("0,0");

         int result = 0;

         while(queue.Count > 0)

         {

             int size = queue.Count;

             for(int i = 0; i < size; i++)

             {

                 var point = queue.Dequeue();

                 int currX = point[0];

                 int currY = point[1];

                 if(currX == x && currY == y)

                     return result;

                 foreach(var d in Dirs)

                 {

                     int r = currX + d[0];

                     int c = currY + d[1];

                     if(r >= -1 && c >= -1 && !visited.Contains(string.Format("{0},{1}", r, c)))

                     {

                         queue.Enqueue(new int[]{r,c});

                         visited.Add(string.Format("{0},{1}", r, c));

                     }

                 }

             }

             result++;

         }

         return -1;

    }

    public static void Main()

    {

        Console.WriteLine("UniLecs");

        // tests

        Console.WriteLine(GetMinKnightMoves(2, 1).ToString()); // 1

        Console.WriteLine(GetMinKnightMoves(5, 5).ToString()); // 4

    }

}