#97. Two numbers: 3 * a - 2 * b
You get two integers a and b. Print the value of the expression `3 * a - 2 * b`.
### Input
The first line has a, the second line has b (0 ≤ a, b ≤ 100).
### Output
One integer.
Examples
Input
29 30
Output
27
Input
66 35
Output
128
💡 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.