题目描述
An uppercase or lowercase English letter $\alpha$ will be given as input.
If $\alpha$ is uppercase, print A; if it is lowercase, print a.
-----Constraints-----
- $\alpha$ is an uppercase (A - Z) or lowercase (a - z) English letter.
-----Input-----
Input is given from Standard Input in the following format:
α
-----Output-----
If $\alpha$ is uppercase, print A; if it is lowercase, print a.
-----Sample Input-----
B
-----Sample Output-----
A
B is uppercase, so we should print A.
输入格式
见题面
输出格式
见题面
样例输入
B
样例输出
A