using System;
 
public class Test
{
	public static void Main()
	{
		byte A = 0x9a;
		byte B = 0x72;
		byte C = (byte)(
		        (A & 0x80) |
		        ((A & 0x20) << 1) |
                        ((A & 0x08) << 2) |
                        ((A & 0x02) << 3) |
                        ((B & 0x80) >> 4) |
                        ((B & 0x20) >> 3) |
                        ((B & 0x08) >> 2) |
                        ((B & 0x02) >> 1));
                Console.WriteLine(C);
 
	}
}

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