AT_past17_a BMI

Takahashi is going to classify a person into the following three types (A, B, or C): - A: Their BMI is strictly less than $ 20 $ . - B: Their BMI is $ 20 $ or greater, and strictly less than $ 25 $ . - C: Their BMI is $ 25 $ or greater. The BMI of a person of height $ h $ meters and weight $ w $ kilograms is represented as $ \frac{w}{h^2} $ . Determine the type of a person of height $ H $ centimeters and weight $ W $ kilograms.

The input is given from Standard Input in the following format: > $ H $ $ W $

Print the type (A, B, or C) of a person of height $ H $ centimeters and weight $ W $ kilograms.

### Sample Explanation 1 The BMI of a person of height $ 170 $ centimeters and weight $ 55 $ kilograms is $ 19.03114... $ , which is less than $ 20 $ . Thus, they are classified as type A. ### Sample Explanation 2 Their BMI is $ 200 $ , which is greater than or equal to $ 25 $ , so they are classified as type C. ### Constraints - $ 100 \leq H \leq 200 $ - $ 30 \leq W \leq 200 $ - All input values are integers.