BitRollerWrong

using System;
namespace BitRoller
{
    class BitRollerWrong
    {
        static void Main()
        {
            int num = int.Parse(Console.ReadLine());
            int f = int.Parse(Console.ReadLine());
            int r = int.Parse(Console.ReadLine());
            int maskF = 1 << f;
            int fBit = maskF & num;
            for (int i = 0; i < r; i++)
            {
                num &= ~maskF;
                int lastBit = 1 & num;
                lastBit <<= 18;
                num >>= 1;
                num |= lastBit;
                if ((maskF & num) == maskF)
                {
                    num = num | (maskF >> 1);
                }
                num |= fBit;
            }
            Console.WriteLine(num);
        }
    }
}