Perimeter of a Rectangle
Compute the perimeter of a rectangle from its length and width.
Input format
A single line with two positive integers L and W, the length and width.
Output format
Print the perimeter of the rectangle, which is 2 * (L + W).
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
3 4Expected output
14Example 2
Input
10 5Expected output
30