Manhattan Distance : Take the sum of the absolute values of the differences of the coordinates.

For example: 

PointA = (x1,y1)

PointB = (x2,y2)

Manhattan Distance between PointA and PointB =  | x1 - x2 | + |  y1 - y2 |

Here | a | is defined as follows-

| a | =   

Now, You are given a point with integer coordinates A (x,y) and a natural number N you have to find the number of points P such that manhattan distance between point P and point A is exactly N ( Point P should have integer coordinates as well. ).

Input Format: The first line of input will contain three single space seperated integers x , y and N. Where A is point (x,y) and N is manhattan distance.

Output Format: Print a single Integer - the number of points P such that manhattan distance between point P and point A is exactly N

Constraint:

0 <= | x | <=  \(10^{18}\)

0 <= | y | <= \(10^{18}\)

1 <= N <= \(10^{18}\)