using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
 
class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int[] inpt = Reader.GetInt();
        int a = inpt[0];
        int b = inpt[1];
        int startPos = inpt[2];
        int pos = startPos;
        int move = 0;
        do
        {
            if(pos == 1) {
                // 下ボタンを押せば確実にAが動く
                move += (Math.Abs(pos - a));
                move += 1;
                break;
            } else if(Math.Abs(pos - b) < Math.Abs(pos - a)) {
                // Bが来る
                // Aと同じ階か1Fに行く
                move += (Math.Abs(pos - b));
                b = pos;
                if(Math.Abs(a-b) + Math.Abs(a - 1) >= Math.Abs(b-1)) {
                    move += pos - 1;
                    pos = 1;
                } else {
                    move += Math.Abs(pos - a);
                    pos = a;
                }
            } else {
                // Aが来る
                move += Math.Abs(pos - a);
                move += pos;
                break;
            }
        } while (pos != 0);
        Console.WriteLine(move);

    }
    

    

 
    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"


100 1 2

 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ', bool trim = false)
        {
            string inptStr = ReadLine();
            if (trim)
            {
                inptStr = inptStr.Trim();
            }
            string[] inpt = inptStr.Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}