using System;

namespace inversionBits
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			Console.WriteLine ("Saisissez un entier : ");
			ushort x = ushort.Parse (Console.ReadLine ());
			ushort maskFirst = 1<<(sizeof(ushort)*8 - 1);
			ushort maskLast = 1;
			ushort result = 0;
			for (int i =  sizeof(ushort)*8 - 1; i>0 ; i-=2)
			{
				ushort firstBit = (ushort)(x&maskFirst);
				ushort LastBit = (ushort)(x&maskLast);
				firstBit >>= i;
				LastBit <<= i;
				result = (ushort)(result | firstBit | LastBit);
				maskFirst>>=1;
				maskLast<<=1;				
			}
			Console.WriteLine("Après inversion de l'ordre des bits on a " + result);
		}
	
	}
}