101930: [AtCoder]ABC193 A - Discount
Memory Limit:256 MB
Time Limit:2 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description
Score : $100$ points
Problem Statement
A shop sells a product whose regular price is $A$ yen (Japanese currency) for $B$ yen. By what percentage of the regular price is this product discounted?
Constraints
- $A$ and $B$ are integers.
- $1 ≤ B < A ≤ 10^5$
Input
Input is given from Standard Input in the following format:
$A$ $B$
Output
Print the answer as a decimal.
Your answer will be judged as correct when its absolute or relative error from our answer is at most $10^{-2}$.
Sample Input 1
100 80
Sample Output 1
20.0
If a product whose regular price is $100$ yen is sold for $80$ yen, it is discounted by $20$ percent of the regular price.
Sample Input 2
7 6
Sample Output 2
14.285714285714285714
Sample Input 3
99999 99998
Sample Output 3
0.00100001000010000100