d:\>test.pl
324     = 00110011 00110010 00110100
329     = 00110011 00110010 00111001
XOR     = 00000000 00000000 00001101
Index   =                   2
Result = 324-9

325     = 00110011 00110010 00110101
349     = 00110011 00110100 00111001
XOR     = 00000000 00000110 00001100
Index   =          1
Result = 325-49

340     = 00110011 00110100 00110000
509     = 00110101 00110000 00111001
XOR     = 00000110 00000100 00001001
Index   = 0
Result = 340-509