#41. Rectangle perimeter
You get the length a and the width b of a rectangle. Find its perimeter.
### Input
Each on its own line: a, b (1 ≤ value ≤ 50).
### Output
One integer.
Examples
Input
12 33
Output
90
Input
46 7
Output
106
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.