Score : 100 points
Snuke lives at position x on a number line. On this line, there are two stores A and B, respectively at position a and b, that offer food for delivery.
Snuke decided to get food delivery from the closer of stores A and B. Find out which store is closer to Snuke's residence.
Here, the distance between two points s and t on a number line is represented by |s-t|.
Input is given from Standard Input in the following format:
x a b
If store A is closer, print A
; if store B is closer, print B
.
5 2 7
B
The distances between Snuke's residence and stores A and B are 3 and 2, respectively.
Since store B is closer, print B
.
1 999 1000
A