#83. Two numbers: a * b - a
You get two integers a and b. Print the value of the expression `a * b - a`.
### Input
The first line has a, the second line has b (0 ≤ a, b ≤ 100).
### Output
One integer.
Examples
Input
17 46
Output
765
Input
1 57
Output
56
💡 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.