Assume a binary number x is of the form

x = x4x3x2x1x0

That is, x is represented by a binary string of length 5, where x0 ... x4 are the bits of this representation.

Let y be the number of the form

y = 1x = 1x4x3x2x1x0

That is, y is obtained from x by adding to its binary representation a 1 on the left.

i need to know the difference between y-x in decimal